The offline library
Every one of these is free, legal and downloadable today. Take them before you need them — that is the entire point.
On method. Every Project Gutenberg id below was resolved against the official catalogue feed (pg_catalog.csv, 90,647 records) rather than written from memory, then fetched over HTTP. Collections were fetched directly. A live URL is necessary but not sufficient — see the notes on wrong-book and soft-404 failures in /about. Links last checked 2026-10-09.
How this was verified →
Start here: bulk archives
Individual books are useful. These are transformative — mirror them to physical media first, in priority order.
Priority 1
~110 GB full with images · ~55 GB no-image · ~5 GB 'best of'
Wikipedia, offline (Kiwix ZIM)
The single highest-value object you can store. One file holds essentially every technical article humanity has written down, readable on a phone with no network. If you take exactly one thing from this page, take this. Take the largest version your storage allows, and take a second copy.
Priority 1
~50–400 MB
Hesperian Health Guides
Where There Is No Doctor, Where There Is No Dentist, A Book for Midwives, Helping Children Who Are Deaf. Written specifically for people practising medicine with no hospital, no laboratory and no reliable drug supply — which is exactly your situation. Free digital copies, and the full text is on their HealthWiki.
Priority 1
~13 GB
CD3WD appropriate-technology archive
Thousands of practical village-technology manuals — building, water, food processing, small-scale metalwork, farm tools. The original cd3wd.com is dead. It survives only as mirrors on the Internet Archive, which is the copy you should take.
Priority 1
~2 GB
OpenStax textbooks
Peer-reviewed, current, openly licensed university textbooks: algebra through calculus, physics, chemistry, biology, anatomy, microbiology. This is the teaching layer — the thing that turns a surviving group into one that can still produce engineers in generation two.
Priority 1
~200 MB
WHO water, sanitation and health guidance
The current international standard for drinking-water quality and sanitary practice, including the household treatment methods that matter when there is no utility. Freely downloadable from WHO's IRIS repository.
Priority 1
a website; each entry saves as a PDF
UNHCR Emergency Handbook
The planning numbers for a camp or a new settlement in one place: ground per person, spacing and firebreaks, latrine and water distances, drainage and site selection. It follows the Sphere humanitarian standards. Save the settlement, shelter and water entries before you need them.
Priority 1
Free PDF download
WHO, Immunization in Practice
WHO's field guide for health staff: the cold chain, vaccine handling, the shake test, vial monitors, and running a session. The manual behind the rules on the refrigeration step.
Priority 1
~1–8 GB depending on format
Encyclopædia Britannica, 11th edition (1911)
Written at the last moment when a general encyclopaedia still explained industrial processes in enough operational detail to follow: how a blast furnace is charged, how a dynamo is wound, how soda ash is made. Modern encyclopaedias describe; this one instructs. The transcribed Wikisource text is far more useful than page scans.
Priority 2
~100 GB
The Survivor Library
A large collection of pre-1920 practical American technical books, deliberately assembled around the question 'how would you rebuild this without electricity'. Heavy overlap with Gutenberg but includes trade manuals Gutenberg never digitised.
Note: Site root is live; internal index paths move often — navigate from the homepage rather than bookmarking deep links.
Priority 2
~4 GB
Appropedia
The living wiki of appropriate technology: hand pumps, biosand filters, rocket stoves, composting latrines, small-scale biogas. Where CD3WD is a frozen archive, this is maintained. Available as a Kiwix ZIM for offline use.
Priority 2
~10 GB
FAO agricultural documents
The world's most complete free library on growing food at every scale — crop agronomy by species and climate, animal husbandry, irrigation, storage, fisheries, post-harvest loss. Gutenberg's agriculture is Victorian; this is current and global.
Priority 2
~5 GB
USDA / NRCS soil and conservation library
Soil survey methods, erosion control, crop rotation and the home food preservation guidance that keeps a harvest edible through winter. The USDA canning guide is maintained by NCHFP, not by the USDA page usually cited for it.
Priority 2
one PDF book
Wood Handbook (USDA Forest Products Laboratory)
Density, strength, drying, decay and fastening of the commercially important woods, measured. The numbers behind choosing a log that floats, a spar that bends without breaking and a plank that will not rot.
Priority 2
~20 MB
The Humanure Handbook
The practical manual for safely composting human waste and returning it to soil — closing the nutrient loop that industrial agriculture closes with synthetic fertiliser you will not have for decades.
Priority 2
~15 GB
LibreTexts
Free university-level chemistry, physics, engineering and biology, deeper and more specialised than OpenStax. The chemistry library in particular covers the industrial processes in tiers 3–5.
Priority 2
~90 GB with all formats · ~15 GB text only
Project Gutenberg (complete)
Everything listed individually below, plus 75,000 more. The complete mirror is small enough to be worth taking whole rather than curating — and its pre-1929 technical books describe processes at the workshop scale you will actually be operating at.
Priority 3
Unbounded — curate
Internet Archive
The fallback for anything not found elsewhere, including scans of trade manuals, military field manuals and out-of-print engineering texts. Search by subject, download the DjVu/PDF, and store what you use.
Individual titles
205 of 205 shown
1
Shelters, Shacks and Shanties
Every shelter buildable with an axe and no fasteners, drawn clearly. Starts at a leaf hut and ends at a log house.
1
Water Supply: the Present Practice of Sinking and Boring Wells
How to find groundwater and get a well down to it with hand tools — the difference between a camp and a settlement.
1
Organic Gardener's Composting
Modern, practical and rigorous on getting a heap hot enough to kill pathogens and weed seed — which matters when the input includes human waste.
1
The Story of the Soil
Soil fertility as a balance sheet — what crops remove and what you must return. Written as a novel to make the agronomy stick, and it works.
1
Home Vegetable Gardening
The practical first-year growing manual: what to sow when, spacing, succession and storage.
1
Notes on Nursing
Ventilation, cleanliness, feeding, observation. Nursing care changes survival more than any drug you will be able to make for decades, and this book is where that was first argued from data.
1
Talks on Manures
Handling, composting and applying manure. Before synthetic nitrogen this is the entire fertility system, and getting it wrong caps your yields permanently.
1
The Field and Garden Vegetables of America
Hundreds of open-pollinated varieties described in detail — the reference for choosing what to save seed from.
1
Cottage Building in Cob, Pisé, Chalk and Clay
Permanent houses from subsoil and straw, needing no kiln, no cement and no sawmill. The most under-rated building book on this list.
1
Pottery, for Artists, Craftsmen and Teachers
Digging, preparing, forming and firing clay. Pottery is the first fire-proof container and the first real kiln practice.
1
The Young Mechanic
How to use every hand tool, and how to make several of them. The right first workshop book for someone starting with nothing.
1
Carpentry
Framing, roofing and floors from first principles, with the layout geometry worked out.
1
Robert's Rules of Order
A complete, tested procedure for a group making decisions together: motions, amendments, quorum, minutes. Unglamorous and immediately usable on day one.
1
Building with logs
The US Forest Service manual for log buildings: logs 10–12 inches, cut in winter and seasoned six months, a continuous vented foundation, the saddle notch cut from the underside, settlement allowances over doors and windows, chinking, scribed chinkless walls, and shake roofs. The source for the log house build.
1
The Handbook of Soap Manufacture
Fat plus lye. Soap is the cheapest life-saving technology ever invented and you can make it in year one.
1
Mechanical Drawing Self-Taught
Drawing is how a design survives the person who had it, and how two people build the same part. Learn it before you need it.
1
De Re Metallica
1556, and still the best illustrated account of mining, ore dressing and smelting with pre-industrial means. 292 woodcuts showing exactly how the machinery was built. Translated by a mining engineer who later became a US president.
1
A System of Midwifery
Childbirth is the largest single cause of death for women in every pre-industrial society. Clean hands, patience and knowing when not to intervene account for most of the improvement.
1
Forge Work
The blacksmithing course: fire management, drawing, upsetting, bending, welding, tempering. The trade that makes all other trades' tools.
1
A Text-book of Tanning
Hide into leather with bark tannins, lime and time. Leather is your belting, footwear, harness, bellows and hinges before rubber exists.
1
The Science of Brickmaking
Clay selection, moulding, drying and firing. Bricks are the first mass-produced building unit and the first real test of your kiln.
1
Ancient Law
How legal systems actually develop — from status to contract, from custom to code. The comparative evidence for why publishing the rule changes what a ruler can do.
1
Sewage and Sewerage of Farm Homes
Disposal at the scale of a household or hamlet: distances from wells, ground fall, soil absorption. The practical version of the separation rule.
1
Elements of Arithmetic
Arithmetic taught so that the reasons are visible, by someone who cared whether learners understood rather than merely calculated. The book to teach from.
1
Fireplaces and Chimneys
USDA Farmers' Bulletin: flue area against fireplace opening, throat, smoke shelf and hearth dimensions in one table, clearances to timber and stove pipes, the smoke test, and how to cure a smoky fireplace. The source of the dimensions in the fireplace and chimney build.
1
The First Six Books of the Elements of Euclid
Euclid's geometry with Casey's proofs and exercises: the right angle, similar figures, the circle, and the method of proving each result from the last.
1
Manual of Surgery, Vol. 1: General Surgery
Wounds, infection, shock, amputation and asepsis, from the era just after antisepsis and just before antibiotics — the exact medical situation you will be in.
1
The Working of Steel: Annealing, Heat Treating and Hardening
Heat treatment is what separates a tool that cuts from a bar that bends. Quench, temper, anneal and case-harden, with the reasons.
1
A Handbook of Laboratory Glass-Blowing
Tubes, joints, flasks and condensers. Without a glassblower there is no distillation, no titration and no real chemistry.
1
Modern Machine-Shop Practice (Vols I & II)
The single most valuable technical book on this page after the encyclopaedias. Everything about lathes, planers, drills, gearing, measurement and shop method, drawn in obsessive detail.
1
Merck's 1899 Manual of the Materia Medica
What every drug of the pre-antibiotic era was, what it was for, and what dose. Invaluable precisely because everything in it is makeable from plants and simple chemistry.
1
The Fundamentals of Bacteriology
Germ theory as an operational discipline. Understanding that disease is caused by organisms you can kill with heat is worth more than any single treatment.
1
Measuring Tools
Calipers, micrometers, gauges and standards. You cannot hold a tolerance you cannot measure, and measurement is the true bottleneck of tier 3.
1
The Manufacture of Paper
Rag and pulp into sheet. Paper plus printing is how knowledge stops being scarce.
1
Acids, Alkalis and Salts
The three families that industrial chemistry is built from. Sulphuric acid in particular gates fertiliser, explosives, dyes, batteries and metal refining.
1
Glass Manufacture
Batch composition, furnace design and annealing. Glass gives you windows, bottles, lenses and instruments — an enormous return on one furnace.
1
The Engineer's Sketch-Book of Mechanical Movements
Roughly 2,500 drawn mechanisms — every way yet devised to convert one motion into another. A catalogue of solutions to problems you have not had yet.
1
The Lathe and Its Uses
The lathe is the only machine tool that can reproduce itself. If you build one machine, build this one.
1
Water Power for the Farm and Country Home
Sizing a wheel or turbine to a real stream, with the head and flow calculations. The most accessible sustained power source in tier 3.
1
An Inquiry into the Nature and Causes of the Wealth of Nations
Division of labour, the origin of money, prices and public works, argued from observation of workshops. Long, and the first three books carry most of it.
1
Hygiene: A Manual of Personal and Public Health
Written by a Medical Officer of Health: what a public health authority actually does, in what order, and on what evidence.
1
The Principles of Science
A treatise on how inference actually works — measurement, error, induction, and why a single confirming result proves very little.
1
The Telescope
How refracting and reflecting telescopes work and were developed, from Galileo grinding his own lenses to achromatic objectives: magnification as the ratio of focal lengths, aperture, eyepieces and mounting.
1
On the Construction of a Silvered Glass Telescope
A Smithsonian working account of grinding and polishing optical surfaces by hand: grades of emery washed in water, iron and pitch tools, radius gauges and testing. The method applies to lenses as well as mirrors.
1
Steam: Its Generation and Use
The definitive boiler book of the steam era, written by the people who built them. Boilers are the most dangerous thing in tier 4 and this is the antidote.
1
Lombard Street: A Description of the Money Market
How a banking system behaves in a panic, and the lender-of-last-resort rule: lend freely, on good security, at a penalty rate. Still the standard answer.
1
Calculus Made Easy
Derivatives and integrals taught from scratch by an engineer, with worked problems: the shortest road into the calculus.
1
Electricity for the Farm
Generating and distributing electricity from a water wheel at village scale, written for people with no grid. Closest thing on this list to a step-by-step electrification plan.
1
Hawkins Electrical Guide, Vol. 1
Ten volumes covering everything electrical from magnetism to power stations, in question-and-answer form with thousands of diagrams. The most complete self-teaching electrical course in the public domain. Volumes 2–8 follow the same series.
1
The Radio Amateur's Hand Book
Building a working transmitter and receiver from parts you can make. Long-distance communication is what turns scattered settlements into one society.
2
Identification of the Larger Fungi
How fungal identification is actually done — spore prints, chemical tests, the logic of a key — by a working mycologist. Teaches the method instead of a list to memorise, which is the only thing that transfers to a species the book does not contain.
2
Common poisonous plants of New England
A public-health survey of the temperate hazard species with symptoms and doses attached to each. Regional to the north-east United States, and most of its species are Eurasian introductions found across the temperate world.
2
The Chemical History of a Candle
Faraday's six Christmas lectures of 1860–61: combustion, air, water and carbon, each taught by an experiment that needs no laboratory.
2
Scurvy, Past and Present
The history of scurvy to 1920: who found the cure, when, and how it was repeatedly lost. Written before vitamin C was isolated in 1932 — read it for the record, not for treatment.
2
Boat-Building and Boating
Rafts, dugouts, flat-bottomed punts and canoes, built with hand tools and drawn step by step. Its safety advice is 1911's; the step's is current.
2
The Complete Book of Cheese
Cheese is how milk survives summer. Fermentation and salt, no refrigeration required.
2
The Culture of Vegetables and Flowers From Seeds and Roots
Seed saving and propagation by a seed house that knew what it was doing.
2
Woodwork Joints
Every joint that holds without glue or screws — which is every joint you will be able to make for years.
2
Mysteries of Bee-keeping Explained
Honey is your sweetener, your preservative and your best wound dressing. Wax is candles and waterproofing. Bees also pollinate the orchard.
2
A New Orchard and Garden
Grafting and orchard establishment, from 1618. Trees planted in year one feed you in year eight — plant them before you think you need them.
2
Hand-Loom Weaving
Building a loom and using it. Cloth is one of the four things a settlement must make and cannot do without.
2
A Treatise on Grain Stacking
Keeping a harvest dry outdoors. Losing the crop after harvesting it is a common and avoidable failure.
2
A Treatise on Sheep
Meat, milk, wool and manure from land that grows nothing else.
2
Poultry: A Practical Guide
Chickens are the fastest protein and the easiest livestock to start with.
2
The Natural History of Clay
How to recognise a workable clay in the field and what it will and will not do when fired.
2
Chimneys and Fireplaces
A chimney that draws is not obvious and a chimney that does not draw fills a house with carbon monoxide.
2
ABC of the Steel Square and Its Uses
A single steel square solves roof pitch, stair rise and every angle in a building. Portable trigonometry for people with no trigonometry.
2
The Use of Ropes and Tackle
Blocks, purchases and mechanical advantage — how a few people move something that should need fifty.
2
Fences, Gates and Bridges: A Practical Manual
Keeping animals in and animals out is most of the difference between having livestock and losing them.
2
A Manual of Mending and Repairing
Repair is cheaper than manufacture by an enormous margin, and for years it will be the only option.
2
How to Make Pottery
The simplest possible entry point, including pit firing.
2
Practical Farm Buildings: Plans and Suggestions
Granaries, byres and root cellars — the buildings that decide how much of your harvest you still own in March.
2
The Origin of Metallic Currency and Weight Standards
Where money actually came from, traced through weight standards rather than assumed from barter. The book that makes the tally-before-coinage sequence concrete.
2
The Bark Canoes and Skin Boats of North America
The Smithsonian's record of the birch-bark canoe, the kayak and the umiak, type by type: bark, frame and lashing, the builders' own order of work, and lines drawn by a naval architect. The standard work on boats built from a forest or a coast with hand tools.
2
Dry-Farming: A System of Agriculture for Countries under a Low Rainfall
Growing crops without irrigation. If your ground is dry, this book is the difference between farming and not.
2
The Mechanical Properties of Wood
Which timber to use where, and how much load it will actually take before it fails.
2
Physiology and Hygiene for Secondary Schools
The body explained well enough to teach from, which is what you need for generation two.
2
The Practical Distiller
Stills, mashes and fractions at farm scale. Alcohol is a disinfectant and a solvent long before it is anything else.
2
Special Report on Diseases of the Horse
The horse is the engine of tiers 1–3, and this is its service manual.
2
Textiles
Fibre properties, spinning, weaving and finishing across all the major fibres.
2
How to Make a Shoe
Footwear failure is a mobility failure and then a health failure. Unglamorous and genuinely important.
2
Manures and the Principles of Manuring
The scientific treatment — nitrogen, phosphate and potash accounting.
2
Special Report on Diseases of Cattle
Losing the herd is losing traction, milk, manure and meat at once.
2
Soap-Making Manual
The more technical companion, with saponification values.
2
Alcoholic Fermentation
Fermentation is your first biotechnology: preservation, disinfectant, fuel and analgesic from one process.
2
Practical Methods of Sewage Disposal for Residences, Hotels and Institutions
Small-scale disposal for a single building or compound — the scale you will be at for years.
2
Obstetrical Nursing
The companion care manual, more practical than the above.
2
Modern Copper Smelting
Copper is the first metal you will smelt and the one electricity depends on.
2
The Complete Distiller
Stills, condensers and fractions. Alcohol at usable purity is a medical asset long before it is a recreational one.
2
The Construction and Maintenance of Earth Roads
Drainage, crown and camber. A road is a drainage structure that happens to carry traffic.
2
Practical Forging and Art Smithing
The second smithing book, with the harder operations worked through.
2
History of Sanitation
What settlements did about water and waste across two thousand years, and which arrangements worked. Useful for what to copy and what not to.
2
Essays; Political, Economical, and Philosophical — Volume 1
Essay IV, Of Chimney Fire-places (1796): a throat four inches wide, a back one-third the width of the opening, and sides at 135°, all found by experiment. The origin of the shallow, splayed fireplace that sends heat into the room rather than up the flue.
2
Kitecraft
How to build and fly kites as a craft: choosing and balancing sticks, lashing, stringing, covering, bridles and lines, for tailless, box and a hundred other kites, with the proportions that make them fly.
2
The Automobile Storage Battery: Its Care And Repair
The lead-acid cell in working detail: plates, separators, acid strength by hydrometer, charging rates, and the faults that kill a battery early.
2
A Text-book of Assaying
Determining what is actually in an ore before you spend a month of fuel smelting it.
2
On Laboratory Arts
Making your own laboratory apparatus. Chemistry is gated on glassware, and glassware is gated on this book.
2
A Manual of the Operations of Surgery
Procedures described step by step, by the surgeon Conan Doyle based Holmes on.
2
Concrete Construction: Methods and Costs
Mixing, forming, placing and curing — once you have lime and cement, this is what you do with them.
2
Elements of Plumbing
Traps, vents and falls. Indoor water without indoor sewage requires knowing why a trap seal breaks.
2
Principles of Mining
Getting ore out of the ground at scale, safely, and knowing when a deposit is not worth working.
2
Turning and Boring
Boring a true cylinder is the operation that makes a steam engine possible instead of lethal.
2
Chlorination of Water
Dosing, contact time and residual testing. The single public-health intervention with the best lives-saved-per-effort ratio ever recorded.
2
An Introduction to Machine Drawing and Design
Turning a drawing into a machine that works, including the sizing rules.
2
A Manual of the Hand Lathe
The pre-power version — a lathe driven by a treadle and a person, which is where you will start.
2
Mechanics: The Science of Machinery
Forces, levers, gears and efficiency — the physics you need before designing anything that moves.
2
Soldering, Brazing and Welding
Joining metal without a forge weld — required for containers, pipework and any electrical work.
2
Glue, Gelatine, Animal Charcoal, Phosphorus, Cements, Pastes and Mucilages
Adhesives from waste. Nothing is assembled without them.
2
The Art of Paper-Making
The hand and small-mill version — the scale you will start at.
2
Pumps and Hydraulics (Part 1)
Moving water uphill is the oldest and most useful application of power there is.
2
The Economy of Workshop Manipulation
How to organise work so that a shop produces rather than merely operates.
2
The Miller in Eighteenth-Century Virginia
How a water mill was actually built and run, including the stone dressing.
2
Shafting, Pulleys, Belting and Rope Transmission
Line shafting distributes one power source to twenty machines. This is how a workshop was powered before every tool had a motor.
2
The Modern Clock
Timekeeping is navigation, it is scientific measurement, and it is the discipline that trained the first precision machinists.
2
Sewerage and Sewage Treatment
Getting waste away from people and treating it before it returns. The other half of the disease equation.
2
Surveying and Levelling Instruments
Making and using the instruments that let you lay out a canal, a field system or a foundation accurately.
2
The Filtration of Public Water-Supplies
Slow sand filtration worked out properly: rates, bed depth, cleaning cycles. Scales from a barrel to a town.
2
The Common Law
Law as accumulated practice rather than deduction from principle — why recorded decisions in like cases are what make outcomes predictable.
2
Principles of Public Health
The same subject at a plainer level — water, waste, food, housing and disease control as a set of duties rather than a science.
2
The Sanitary Evolution of London
How one city built the institution, including the decades of resistance and the outbreaks that forced each step. The political history sanitation books usually omit.
2
A System of Logic, Ratiocinative and Inductive
The methods of experimental inquiry set out explicitly — agreement, difference, residues, concomitant variation. This is where the control group is argued for.
2
Standard Measures of United States, Great Britain and France
What a standard physically is, how the primaries were kept and compared, and how much they drifted. The custody problem, documented.
2
The Microscope: Its History, Construction, and Application
The simple and compound microscope, Leeuwenhoek's single-lens instruments included, with how to prepare, stain and mount specimens.
2
The Slide Rule
The standard manual for the instrument that did engineering arithmetic for a century: multiplication, division, squares and roots, and the special scales, with worked examples.
2
The Seaman's Friend
Practical seamanship under sail by a man who sailed before the mast: rigging, setting and taking in sail, steering, tacking and wearing, anchoring and the working of a square-rigged ship, with a dictionary of sea terms.
2
Gardening Indoors and Under Glass
Building and running the hotbed, the cold frame and the small greenhouse, from an early twentieth-century practical manual: frames, sashes, manure heat, ventilation and watering.
2
Areopagitica
The 1644 case against licensing the press, made to the Parliament that was doing it. Short, and still the argument every censor has to answer.
2
On the Origin of Species By Means of Natural Selection
The first edition of 1859: the evidence for evolution by natural selection, much of it from the breeding of pigeons, dogs and crops that farmers already practised.
2
Newton's Principia: The mathematical principles of natural philosophy
Newton's laws of motion and of gravitation, 1687, in Motte's English translation: the book the whole of classical mechanics descends from.
2
Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries
Lavoisier's 1789 textbook, in Kerr's English translation: conservation of mass, the modern idea of an element, and the naming of compounds that chemistry still uses.
2
On the Economy of Machinery and Manufactures
The founding text on how work should be divided and why manufacturing organises itself as it does. Relevant the moment you have more than twenty people.
2
Creative Chemistry
What industrial chemistry actually produces and why — nitrogen fixation, dyes, plastics, explosives — in narrative form.
2
The Elements of Bacteriological Technique
Culturing, staining and identifying organisms — the prerequisite for vaccines and for antibiotics.
2
Records of Steam Boiler Explosions
A catalogue of how boilers actually killed people, with causes. Read it as a list of things not to do — it is more useful than any design text for staying alive.
2
Natural & Artificial Sewage Treatment
Land treatment and filter beds — treating sewage rather than relocating the problem downstream.
2
Precision Locating and Dividing Methods
Dividing a circle accurately — the operation behind gears, screw threads, clocks and every instrument scale.
2
Steel
Steelmaking as an industrial process — what actually happens between ore and structural section.
2
English and American Tool Builders
The history of how precision was actually bootstrapped — Maudslay, Whitworth, the origin of the standard thread. Read it for the method, not the anecdotes.
2
The Slide Valve, Simply Explained
Valve timing is the part of a steam engine that is genuinely hard to reason about.
2
Up To Date Business: Lessons in Banking, Exchange and Finance
The mechanics — bills, exchange, discount, bank accounts — at the level of someone who has to operate them rather than theorise about them.
2
Wright Brothers National Memorial, North Carolina
The National Park Service's history of how the Wrights solved flight, machine by machine: the 1899 kite, the 1900–1902 gliders, the wind tunnel, the engine and propellers, and the 1903 flights, with their dimensions and weights.
2
Gas and Oil Engines, Simply Explained
Internal combustion at the level of someone who must repair one, not design one.
2
Gas-Engines and Producer-Gas Plants
Producer gas runs an engine on wood or coal when you have no petroleum — a genuinely realistic route for a rebuilding society.
2
How to Make Electrical Machines
Winding your own generators and induction coils, with the practical dimensions.
2
The Boy Electrician
Cells, magnets, motors, bells and generators built from scratch materials. Deceptively deep.
2
Fiat Money Inflation in France
One currency destroyed in detail, with the political reasoning that did it at each stage. Read it as a failure mode, not as history.
2
The Federalist Papers
Eighty-five essays arguing for a written constitution with divided powers, written while one was being ratified. Numbers 47–51 on the separation of powers — 'ambition must be made to counteract ambition' — are the clearest short case for checks and balances.
2
Considerations on Representative Government
How a representative assembly should work and what it should leave to officials, why officials should be chosen by open competitive examination, and how local government relates to central. Written in 1861 by a working administrator.
2
An Investigation of the Laws of Thought
Boole's 1854 algebra of logic, the mathematics every switching circuit and computer is built on.
2
Experimental Researches in Electricity, Volume 1
Faraday's own record of discovering electromagnetic induction in 1831: the experiments behind every generator and transformer, written to be repeated.
2
Letters of a Radio-Engineer to His Son
The clearest explanation ever written of how vacuum tubes and radio actually work, assuming no prior physics.
3
Bee Hunting
Finding wild colonies by lining bees — how you get your first hive with nothing.
3
Seat Weaving
Basketry technique applied to furniture — the same skills make containers.
3
A Course in Wood Turning
The wood lathe is the easy lathe, and the training ground for the metal one.
3
Vegetable Dyes
Colour from plants, with mordants. The first industrial chemistry any society develops.
3
Lectures on Ventilation
Indoor air kills quietly — from smoke, from damp and from crowding.
3
Firemen and Their Exploits
Fire destroyed pre-industrial towns routinely. Worth reading for what organised response looks like.
3
Practical Stair Building and Handrailing
The hardest ordinary carpentry problem, solved geometrically.
3
The Glue Book
Practical hide glue, which is reversible, repairable and makeable from scraps.
3
Non-Technical Chats on Iron and Steel
The clearest plain-language explanation of why carbon content changes everything.
3
A manual of face brick construction
Bonds, header courses every fifth or sixth course, lintels 8 inches longer than the opening, arches, and the relieving arch over a timber lintel so the wall stands if it burns. Its mortars contain cement, which suits its hard face brick; soft brick wants lime.
3
Encyclopædia Britannica 11th ed. — 'Logarithm' to 'Lord Advocate'
A sample slice of the 1911 Britannica. Take the whole set from Wikisource rather than volume by volume.
3
Metal Spinning
Forming hollow metal shapes on a lathe with no press and no die.
3
Descriptive Pamphlet of the Richmond Mill Furnishing Works
Millstones and mill machinery as a specification — useful for dimensions.
3
Windmills, Picturesque and Historic
The pre-industrial wind machine, with the mechanisms drawn.
3
Lightning Conductors: Their History, Nature, and Mode of Application
One strike can burn the granary, the workshop or the library. Cheap insurance.
3
Rock Blasting
Moving rock in quantity, once you have explosives and before you have machines.
3
The Art of Glass-Blowing
The second glassblowing text, more craft than laboratory.
3
The Municipal and Sanitary Engineer's Handbook
The whole municipal problem — water, drains, paving, refuse — from the era when towns first solved it.
3
Pigments, Paint and Painting
Paint is not decoration — it is how wood and iron survive weather.
3
Plain Concrete for Farm Use
The simplest possible concrete instructions, deliberately written for non-specialists.
3
Concrete Construction for the Home and the Farm
Small pours: tanks, troughs, floors, foundations. Practical proportions for people without a laboratory.
3
Lead Smelting and Refining
Lead for pipes, glazes, type metal and chambers — with the poisoning risks stated plainly.
3
Hardware, Estimating, and Mill Design
Laying out a working mill rather than a pile of machines.
3
Elementary Lathe Practice
The teaching version, if the others assume too much.
3
Safe Foundry Practice
Molten metal kills people in specific, predictable ways. Learn them from a book instead.
3
Edible Fats and Oils
Pressing and refining oils — for food, light, lubrication and soap.
3
The Complete English Tradesman
How a small enterprise actually kept its books and its credit, written by someone who had gone bankrupt twice and paid attention.
3
Men and Measures
How measurement systems arose and why they fragmented — the argument for choosing one system and holding it.
3
Plank Frame Barn Construction
Framing a large building from sawn planks nailed and bolted into trusses rather than heavy timbers mortised and pegged (1904): the light frame that sawmills and cheap nails made possible.
3
Balloon observation, and instructions on the subject of work in the basket
The 1918 US Army manual for observers in tethered balloons: what can be seen from the basket, how to report it, and working with the winch and the ground.
3
Woodward's Graperies and Horticultural Buildings
Nineteenth-century plans and sections of lean-to and span-roofed glasshouses and vineries, and how they were heated: glasshouses as they were built before steel and plastic.
3
A Short Account of the History of Mathematics
Who found what, and in what order, from the Egyptians to the nineteenth century: the order a rebuilding civilization can expect to rediscover it in.
3
An anatomical disquisition on the motion of the heart & blood in animals
Harvey's 1628 proof that the blood circulates, by dissection, experiment and arithmetic: as much a lesson in method as in anatomy.
3
Micrographia
The first book of drawings made through a microscope, 1665, which named the cell: a model of observing carefully and recording exactly what a lens shows.
3
An Inquiry into the Causes and Effects of the Variolae Vaccinae
Jenner's 1798 report of protecting people against smallpox with cowpox, case by case: the first vaccine, and how its evidence was gathered.
3
Treatise on Light
Huygens's 1690 wave theory of light, which explains reflection and refraction and so the working of every lens.
3
Acetylene: Principles of Its Generation and Use
Carbide and water make a bright light and a hot flame from limestone and coke.
3
Nitro-Explosives: A Practical Treatise
Included because explosives are how you cut a canal, sink a shaft or clear a stump — and because the chemistry is shared with fertiliser. Genuinely dangerous; treat the safety sections as the main text.
3
Instruction Book on Ring Spinning
Mechanised spinning — the first factory process, and the one that started the industrial revolution.
3
Outspinning the Spider: The Story of Wire and Wire Rope
Wire drawing — a prerequisite for electricity that almost every rebuild plan forgets.
3
Principles and Practice of Agricultural Analysis: Fertilizers
Measuring what is in your soil and your fertiliser instead of guessing.
3
Garden Cities of To-Morrow
The 1902 plan that put factories, warehouses and yards on a town’s outer ring beside the railway, away from homes. Historical; the separation distances in the zoning step supersede it.
3
Reflections on the motive power of heat
Carnot's 1824 essay showing that an engine's best possible efficiency is set only by its hot and cold temperatures: why steam pressures kept rising.
3
Oxy-Acetylene Welding and Cutting
Once you have acetylene, this is how heavy fabrication and repair actually get done.
3
Electric Bells and All About Them
The simplest useful electrical system, and a good first build.
3
The Gasoline Motor
Practical operation and repair of a petrol engine, written for the owner rather than the designer.
3
The Story of the Submarine
A 1916 history from Bushnell's Turtle and Fulton's Nautilus to Holland and Lake, with a trip through a diesel-electric boat and a chapter on accidents and escape devices. Period engineering, not today's practice.
3
The Wright Brothers' Engines and Their Design
The Smithsonian's engineering study of the Wright engines from 1903 on: bore, stroke, weight, power and how each was built, by an engine designer.