The elements of astronomy (1919) illustrated by Charles Augustus. Original public domain image from Wikimedia Commons.… https://www.rawpixel.com/image/10184737/image-galaxy-face-personFree Image from public domain licenseSt. Louis Red Cross Motor Corps on duty during influenza epidemic (1918). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301122/free-photo-image-vintage-spanish-flu-womanFree Image from public domain licenseWoman protrait. Free public domain CC0 photo, free public domain CC0 image. https://www.rawpixel.com/image/5922445/photo-image-light-public-domain-handFree Image from public domain licenseAmerican Red Cross canteen workers taking food for family infected with the flu, Charlotte, North Carolina (1918). Original… https://www.rawpixel.com/image/2301114/free-photo-image-vintage-virus-foodFree Image from public domain licenseWinton Churchill, former prime minister of the UK - unknown date & location https://www.rawpixel.com/image/6111407/photo-image-public-domain-person-freeFree Image from public domain licenseWalter Reed Hospital flu ward (ca. 1910–1920). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301131/free-photo-image-spanish-flu-nurse-1918Free Image from public domain licenseFree man sitting in woodpile holding a book image, public domain CC0 photo. https://www.rawpixel.com/image/5923383/photo-image-book-public-domain-treeFree Image from public domain licenseFree black cooking pan image, public domain kitchen appliances CC0 photo. https://www.rawpixel.com/image/5921197/photo-image-light-public-domain-greenFree Image from public domain licenseFilm camera png sticker, object illustration on transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/6482040/png-sticker-public-domainFree PNG from public domain licenseAbutilon (Lime Mallow) pod enlarged six times from Urformen der Kunst (1928) by Karl Blossfeldt. Original from The… https://www.rawpixel.com/image/2222761/karl-blossfeldt-macrophotographyFree Image from public domain licenseSerratula Nudicaulis (Bare–Stemmed Common Saw–Wort) enlarged 5 times from Urformen der Kunst (1928) by Karl… https://www.rawpixel.com/image/2211731/karl-blossfeldt-macrophotographyFree Image from public domain licenseClose up shot of a lion's face in black and white. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296975/free-photo-image-lion-black-and-white-faceFree Image from public domain licenseCirsium Canum (Queen Anne Thistle) enlarged 4 times from Urformen der Kunst (1928) by Karl Blossfeldt. Original from The… https://www.rawpixel.com/image/2208512/vintage-queen-anne-thistle-photographFree Image from public domain licenseCirsium canum (Queen Anne Thistle) enlarged 4 times, Phlomis umbrosa enlarged 4 times, and Salvia enlarged 6 times from… https://www.rawpixel.com/image/2224263/vintage-queen-anne-thistle-photographFree Image from public domain licenseBobcat pencil drawing sketch style. Original public domain image from Flickr https://www.rawpixel.com/image/3399661/free-photo-image-panther-jaguar-illustrationFree Image from public domain licenseOne of the wards for medical cases at Base Hospital, Dijon, France (1919). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301121/free-photo-image-spanish-flu-history-pandemicFree Image from public domain licenseAmerican Red Cross canteen staff (1919). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301129/free-photo-image-women-nurse-spanish-fluFree Image from public domain licenseA woman doing yoga on a sloping ground in silhouette. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301279/free-photo-image-yoga-wallpaper-namasteFree Image from public domain licenseMonkey intimidating, black and white photo. scOriginal public domain image from Wikimedia Commons https://www.rawpixel.com/image/3304554/free-photo-image-monkey-animalFree Image from public domain licenseNieuport 28C.1, vintage airplane image. Original public domain image from The Smithsonian Institution. Digitally enhanced by… https://www.rawpixel.com/image/10103391/photo-image-rose-plant-handsFree Image from public domain licenseLes animaux de "Gibbs" (série des singes): Cet animal vous amuse? =: Animals of "Gibbs" (Monkey series): Does This Animal… https://www.rawpixel.com/image/9648550/image-person-medicine-abstractFree Image from public domain licenseTiger walking on grassy field in black and white. Original public domain image from Flickr https://www.rawpixel.com/image/3583254/free-photo-image-nature-white-tiger-black-and-whiteFree Image from public domain licenseA black-and-white shot of a man playing electric guitar in double exposure. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3303807/free-photo-image-guitar-rock-festival-musicFree Image from public domain licenseInterior of Red Cross House at U.S. General Hospital during influenza epidemic, New Heaven, Connecticut (ca. 1918). Original… https://www.rawpixel.com/image/2301123/free-photo-image-spanish-flu-plague-covidFree Image from public domain licenseBlack and white cat sitting on handrail with colorful graffiti street art mural in background. Original public domain image… https://www.rawpixel.com/image/3298051/free-photo-image-adorable-angora-animalFree Image from public domain licenseBlack and white photo of a cat's face. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296869/free-photo-image-cat-black-irritated-miamiFree Image from public domain licenseBlack and white macro shot of a cat's face. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3288480/free-photo-image-kitten-abyssinian-animalFree Image from public domain licenseAlzheimer's: National Clinical Nursing Conference on Alzheimer's Disease. Original public domain image from Flickr https://www.rawpixel.com/image/9646937/image-person-art-medicineFree Image from public domain licenseClose up elephant face in black and white photography. Original public domain image from Flickr https://www.rawpixel.com/image/3583257/free-photo-image-nature-lion-elephantFree Image from public domain licenseWoman photographer png sticker, lifestyle illustration on transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/6482155/png-sticker-public-domainFree PNG from public domain licenseSurgical nurse, Herrin Hospital (private), Herrin, Illinois (1939). Original from Library of Congress. Digitally enhanced by… https://www.rawpixel.com/image/2301133/free-photo-image-spanish-flu-hospital-nurseFree Image from public domain licenseRetro red television box in black and white photo, free public domain CC0 photo. https://www.rawpixel.com/image/5925185/photo-image-public-domain-vintage-retroFree Image from public domain licenseROM Vital Nutrimento Ricostituente: e Quèsto è Sangue! =: ROM Vital Restorative Nourishment: and This Is Blood! https://www.rawpixel.com/image/10995654/image-background-medicine-horseFree Image from public domain licenseBlack and white shot of elephant. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298486/free-photo-image-elephant-texture-black-background-animalFree Image from public domain licenseIl faut vaincre la tuberculose comme le plus malfaisant des reptiles =: Tuberculosis must be conquered like the most evil of… https://www.rawpixel.com/image/9647161/image-paper-hand-personFree Image from public domain licenseDogs and all about them (1910) photograph art by Robert Leighton. Original public domain image from Wikimedia Commons.… https://www.rawpixel.com/image/11493460/photo-image-dog-face-personFree Image from public domain licenseJohnson's Anodyne Liniment: Unlike Any Other : the Vigor of YouthCollection:Images from the History of Medicine… https://www.rawpixel.com/image/9648384/image-face-hand-personFree Image from public domain licenseElectric guitar, close up shot in black and white. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303761/free-photo-image-electric-bass-guitar-cc0Free Image from public domain licenseClinical Center Patient Activity Department presents [the] patients' creative arts and crafts show. Original public domain… https://www.rawpixel.com/image/9647131/image-background-art-medicineFree Image from public domain licenseHealth of Women with Physical Disabilities. Original public domain image from Flickr https://www.rawpixel.com/image/9647038/image-persons-art-medicineFree Image from public domain licenseThe Civil Rights Act signed by president Lyndon B. Johnson and martin Luther King, Washington DC, USA - 2 July 1964 https://www.rawpixel.com/image/6111534/photo-image-public-domain-person-freeFree Image from public domain licenseBlack and white elephants in water. 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