Researchers, such as this man in the Centers for Disease Control and Prevention's new maximum containment virology… https://www.rawpixel.com/image/8764864/photo-image-person-table-foodFree Image from public domain licenseLilliwaup Falls, Wash.Gifford Pinchot National Forest Historic Photo. Original public domain image from Flickr https://www.rawpixel.com/image/4076009/photo-image-art-nature-forestFree Image from public domain licensePortret van keizerin Auguste Viktoria in Huis Doorn (1920 - 1921) by anonymous and Gustav Liersch and Co https://www.rawpixel.com/image/13759121/photo-image-face-person-artFree Image from public domain licensePortret van de acteur Alfred Gerasch (c. 1925 - 1937) by Residenz Atelier Wien https://www.rawpixel.com/image/13758140/portret-van-acteur-alfred-gerasch-c-1925-1937-residenz-atelier-wienFree Image from public domain licensePortret van een onbekende vrouw met fotoalbums of boeken in klederdracht van Scheveningen, Zuid-Holland (1860 - 1890) by… https://www.rawpixel.com/image/13755865/photo-image-face-person-artFree Image from public domain licenseThe Wellcome Research Institution's building, Euston Road, London: the Hall of Statuary of the Wellcome Historical Medical… https://www.rawpixel.com/image/13974190/photo-image-horse-person-roadFree Image from public domain license This is a scene not just in, but under, Ellinwood, a small town near Great Bend, Kansas … https://www.rawpixel.com/image/8059811/photo-image-public-domain-united-statesFree Image from public domain licensePartly ruined Roman baths of Antoninus Caracalla. Photograph. https://www.rawpixel.com/image/13982846/partly-ruined-roman-baths-antoninus-caracalla-photographFree Image from public domain licensePiramides van Cheops en Chefren, de sfinx en de tempel van Chefren (c. 1895 - before c. 1905) by Maison Bonfils https://www.rawpixel.com/image/13755983/photo-image-paper-horse-personFree Image from public domain licensePortret van een onbekende soldaat in militair uniform (1914 - 1918) by Bermote https://www.rawpixel.com/image/13759797/portret-van-een-onbekende-soldaat-militair-uniform-1914-1918-bermoteFree Image from public domain license An elegant carriage house, one of the vintage structures and artifacts presented in a semicircular… https://www.rawpixel.com/image/8070543/photo-image-vintage-public-domain-houseFree Image from public domain licenseMrs. Elizabeth Cockburn Cleghorn and John Henning as Miss Wardour and Eddie Ochiltree from Sir Walter Scott's "The… https://www.rawpixel.com/image/14275452/photo-image-face-person-artFree Image from public domain licensePiramides van Gizeh tijdens overstroming, op de voorgrond mannen op kamelen (c. 1895 - in or before 1905) by anonymous https://www.rawpixel.com/image/13758955/photo-image-paper-horse-personFree Image from public domain licenseThe restored 1903 North Eastern Railway Autocar - originally with a petrol-electric traction system, nowadays it is diesel… https://www.rawpixel.com/image/6076311/photo-image-public-domain-person-vintageFree Image from public domain licensePortret van een Chinese vrouw (1860 - 1885) by Raimund von Stillfried Ratenitz and Felice Beato https://www.rawpixel.com/image/13759676/photo-image-face-person-public-domainFree Image from public domain licenseA laboratory (a museum reconstruction), with a display of historical pharmaceutical equipment, Germany. Photograph… https://www.rawpixel.com/image/14009155/photo-image-person-man-public-domainFree Image from public domain licenseSuzanna de Roth (1789-1822), echtgenote van Jonkheer Isaäc Pierre Graafland (1789-1825), raadsheer in het hooggerechtshof… https://www.rawpixel.com/image/13792261/photo-image-face-frame-personFree Image from public domain licenseGroepsportret van de Asser-kinderen in toneelkostuum (1856) by Eduard Isaac Asser https://www.rawpixel.com/image/13756229/photo-image-paper-face-plantFree Image from public domain licenseLawrence and Gisela Rhone have worked with NRCS on projects to improve their existing shelterbelt, plant new shelterbelt… https://www.rawpixel.com/image/11071323/photo-image-plant-grass-leafFree Image from public domain licenseEgypt: a temple: the carved exterior facade. Photograph by Pascal Sébah, ca. 1875. https://www.rawpixel.com/image/14021170/photo-image-person-sky-public-domainFree Image from public domain licensePortret van de violist Isay (c. 1880 - c. 1920) by Rijshouwer s Establishment https://www.rawpixel.com/image/13757736/portret-van-violist-isay-c-1880-1920-rijshouwer-establishmentFree Image from public domain license The Dragoon Stables at the Fort Scott national historic site in the southeast Kansas city also named… https://www.rawpixel.com/image/8092539/photo-image-public-domain-city-united-statesFree Image from public domain licenseWellcome Historical Medical Museum, Wigmore Street, London: reconstruction of a sixteenth-century alchemist's laboratory.… https://www.rawpixel.com/image/13986935/photo-image-person-church-swordFree Image from public domain licensePacking Lumber for LOH, Colville NFColville National Forest Historic Photos. Original public domain image from Flickr https://www.rawpixel.com/image/4075787/photo-image-wood-person-natureFree Image from public domain licensePortrait of Maria van Reygersbergh (1632–1674) (c. 1662) by Rombout Verhulst https://www.rawpixel.com/image/13750544/portrait-maria-van-reygersbergh-1632-1674-c-1662-rombout-verhulstFree Image from public domain licenseRoad plowed to Timberline Lodge, Mt Hood National Forest 1930's. Original public domain image from Flickr https://www.rawpixel.com/image/4075398/photo-image-tree-plant-natureFree Image from public domain licensePortret van een onbekende vrouw in klederdracht van Nieuwland, Zeeland (1860 - 1890) by Andries Jager and Andries Jager https://www.rawpixel.com/image/13757268/photo-image-flower-plant-personFree Image from public domain licenseGezicht in het Forum Romanum, Rome (c. 1858 - c. 1863) by Paul Emile Placet https://www.rawpixel.com/image/13755900/gezicht-het-forum-romanum-rome-c-1858-1863-paul-emile-placetFree Image from public domain licenseBig Camas RS, Umpqua NF 1926Umpqua National Forest Historic Photo. Original public domain image from Flickr https://www.rawpixel.com/image/4075626/photo-image-house-nature-forestFree Image from public domain licensePortret van de concertzanger Johan Messchaert (1880 - 1920) by Rijshouwer s Establishment https://www.rawpixel.com/image/13758001/photo-image-paper-face-personFree Image from public domain licenseGroepsportret van vijf mensen in klederdracht uit Rättvik, Zweden (1865 - 1883) by Eurenius and Quist https://www.rawpixel.com/image/13755710/photo-image-paper-face-peopleFree Image from public domain licensePart of the collection of pharmaceutical and medical antiques collected by Burkhard Reber and exhibited in Geneva in 1904.… https://www.rawpixel.com/image/14005629/photo-image-person-pharmacy-public-domainFree Image from public domain license