Triple-Barrel Revolving Flintlock Fowling Piece from the Gun Cabinet of the Princes of Liechtenstein by Tilman Keuks https://www.rawpixel.com/image/8930580/photo-image-gun-arms-rifleFree Image from public domain license"Berlin to New York in less than One Hour!" written by Hugo Gernsback and illustrated by Frank R. Paul in the November 1931… https://www.rawpixel.com/image/7665177/image-paper-art-vintageFree Image from public domain license"Buzurgmihr Masters the Game of Chess", Folio from the First Small Shahnama (Book of Kings) https://www.rawpixel.com/image/9185478/image-paper-art-watercolorsFree Image from public domain licenseFestival of Bacchus Celebrated by Satyrs and Bacchantes by Claude Gillot https://www.rawpixel.com/image/8978075/festival-bacchus-celebrated-satyrs-and-bacchantes-claude-gillotFree Image from public domain licenseTransportation. Car pooling at Glenn Martin. Aircraft workers at the Glenn Martin aircraft plant solve some of their… https://www.rawpixel.com/image/12239766/photo-image-plant-people-shirtFree Image from public domain licenseNew oversize trailer for war workers. Inspecting the new oversize bus trailer, made almost entirely of non-critical… https://www.rawpixel.com/image/12239768/photo-image-plants-persons-technologyFree Image from public domain licensePortrait of two girls reclining on chaise lounge by Sheldon K Nichols https://www.rawpixel.com/image/14274264/portrait-two-girls-reclining-chaise-lounge-sheldon-nicholsFree Image from public domain licenseWhite and s solve problems together on the Sherwood Eddy cotton cooperative of Hill House, Mississippi. Sourced from the… https://www.rawpixel.com/image/12246333/photo-image-plant-person-treeFree Image from public domain licenseRunning water in home of Mormon farmer living in Sana Clara, Utah. As these Mormon farmers live in communities the problem… https://www.rawpixel.com/image/12148833/image-person-art-vintageFree Image from public domain licenseTransportation. Car pooling at Glenn Martin. Car pooling helps solve the labor transportation problem of a big aircraft… https://www.rawpixel.com/image/12306821/image-face-plant-peopleFree Image from public domain licenseDe Land pool. La Roe shop. Fifty-three-year-old Earl La Roe and his wife, of Eustis, Louisiana, solved one of the De Land… https://www.rawpixel.com/image/12306841/image-face-hand-personFree Image from public domain license