Three miniature portraits of John Milton, Oliver Cromwell, and Lady Rachel Russell by Caldesi and Montecchi https://www.rawpixel.com/image/14314308/image-face-person-artFree Image from public domain licenseArmour, helmet and sword of Admiral Jacob van Heemskerck (c. 1580 - c. 1607) by anonymous https://www.rawpixel.com/image/13753629/photo-image-person-sword-public-domainFree Image from public domain licenseThe Campanile di Giotto, Florence, Italy: an astronomer. Photograph by Giacomo Brogi, ca. 1870, of a marble bas-relief by… https://www.rawpixel.com/image/14004730/photo-image-person-cross-artFree Image from public domain licenseRuiterhelm (mantelhelm) Staatse leger (1600 - 1649) by anonymous https://www.rawpixel.com/image/13750933/ruiterhelm-mantelhelm-staatse-leger-1600-1649-anonymousFree Image from public domain licenseZilveren schotel op de Tentoonstelling van oudheden in Delft (c. 1855 - in or before 1863) by A L Oversluijs, anonymous and… https://www.rawpixel.com/image/13759668/image-paper-person-artFree Image from public domain licenseA physician examining a urine flask. Enamel by K.E.L. Hummel, 1859, after Caspar Netscher. https://www.rawpixel.com/image/13983551/image-frame-black-background-circleFree Image from public domain licenseWapenbord met het wapen van de familie Snoeck (Amsterdam) (1700 - 1799) by anonymous https://www.rawpixel.com/image/13792503/image-art-pattern-circleFree Image from public domain licenseProduction. M-4 tanks. M-4 tanks and M-7 mobile howitzer carriages roll off the production lines of the American Locomotive… https://www.rawpixel.com/image/12307328/image-person-man-linesFree Image from public domain licenseBorstplaat van kuras, volgens overlevering gedragen door ritmeester Falaiseau (before 1660 - before 1700) by anonymous https://www.rawpixel.com/image/13751469/image-public-domain-wall-doorFree Image from public domain licenseBorstplaat van een harnas met versieringen (c. 1525 - c. 1575) by anonymous https://www.rawpixel.com/image/13753314/borstplaat-van-een-harnas-met-versieringen-c-1525-1575-anonymousFree Image from public domain licenseGezicht op een paleis in Cambrai (1880 - 1900) by anonymous and anonymous https://www.rawpixel.com/image/13758554/gezicht-een-paleis-cambrai-1880-1900-anonymous-and-anonymousFree Image from public domain licenseShield iron white background architecture. AI generated Image by rawpixel. https://www.rawpixel.com/image/12440840/image-white-background-textureView licenseVlotschuitvoerdersgilde van Amsterdam, gildepenning van Flooris de Jong (1770) by anonymous https://www.rawpixel.com/image/13750277/image-pattern-circle-public-domainFree Image from public domain licenseBethlehem-Fairfield shipyards, Baltimore, Maryland. Condensers in storage. Sourced from the Library of Congress. https://www.rawpixel.com/image/12292908/photo-image-public-domain-factory-architectureFree Image from public domain licenseOld boiler at the Hardin mine near Two Bit Creek, near Deadwood, South Dakota by Russell Lee https://www.rawpixel.com/image/12147685/image-plant-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Washington, D.C. Scrap salvage campaign, Victory Program. Unloading metal scrap from a… https://www.rawpixel.com/image/12287979/photo-image-person-public-domain-manFree Image from public domain license