General Motors Assembly Plant, Petone (circa 1936) by Ken Niven and Gordon H Burt Ltd. https://www.rawpixel.com/image/13029008/photo-image-line-architecture-assemblyFree Image from public domain licenseA shaving machine powered by steam. Coloured etching by R. Seymour. https://www.rawpixel.com/image/13953095/shaving-machine-powered-steam-coloured-etching-seymourFree Image from public domain licenseA shaving machine enabling many people to be shaved at the same time. Coloured etching. https://www.rawpixel.com/image/13961988/image-cartoon-people-artFree Image from public domain licenseTo save time in checking threads on a twenty-millimeter shell booster, a plant superintendent built this machine. It makes… https://www.rawpixel.com/image/12306826/image-plant-hand-personFree Image from public domain licenseA shaving machine enabling many people to be shaved at the same time. Coloured etching. https://www.rawpixel.com/image/14014628/image-cartoon-person-artFree Image from public domain licenseConversion. Automobiles to 40 mm. anti-aircraft guns. Applying automobile production methods to machining of 40 mm. anti… https://www.rawpixel.com/image/12307760/image-plant-person-technologyFree Image from public domain licenseTank manufacture (Chrysler). These are partially completed M-3 tanks, twenty-eight ton steel giants being turned out at the… https://www.rawpixel.com/image/12308249/image-person-factory-noteFree Image from public domain license