Chest X–ray of patient with influenza during World War I. Original image from National Museum of Health and Medicine.… https://www.rawpixel.com/image/2298602/free-photo-image-xray-vintage-black-and-whiteFree Image from public domain licenseLa Halle aux Blés, Street Plan (ca. 1810) by Pierre François Léonard Fontaine. Original from The MET… https://www.rawpixel.com/image/2041110/halle-aux-bles-street-planFree Image from public domain licenseYour victory garden counts more than ever! (1945), vintage poster by Morley, Hubert. Original public domain image from… https://www.rawpixel.com/image/9415002/image-plant-arts-vintageFree Image from public domain licenseGrey Parrot (Psittacus erithacus) colored wood-engraved plate by Alexander Francis Lydon. Digitally enhanced from our own… https://www.rawpixel.com/image/10249203/image-plant-vintage-illustrationFree Image from public domain licenseDufresne's Amazon (Amazona dufresniana) colored wood-engraved plate by Alexander Francis Lydon. Digitally enhanced from our… https://www.rawpixel.com/image/10238183/image-vintage-cartoon-illustrationFree Image from public domain license"Together We Win. Get behind Your Labor-Management Committee" Original public domain image from Flickr https://www.rawpixel.com/image/8799610/image-hands-public-domain-handshakeFree Image from public domain licenseBritain needs you at once (1915) poster by Parliamentary Recruiting Committee. Original public domain image from the Library… https://www.rawpixel.com/image/8683820/image-art-vintage-public-domainFree Image from public domain licensePetz's Conure (Aratinga canicularis) colored wood-engraved plate by Alexander Francis Lydon. Digitally enhanced from our own… https://www.rawpixel.com/image/10246947/image-plant-vintage-leafFree Image from public domain licenseVasa Parrot (Coracopsis) colored wood-engraved plate by Alexander Francis Lydon. Digitally enhanced from our own 1884… https://www.rawpixel.com/image/10238984/image-vintage-illustrationFree Image from public domain licenseThe holy Cow personified as World Mother with many Sanskrit verses. Chromolithograph. https://www.rawpixel.com/image/13951842/image-cartoon-cows-personFree Image from public domain licenseGerman War Exhibition (1916) poster advertisement by Erich Gruner. Original public domain image from the Library of… https://www.rawpixel.com/image/8631648/image-art-vintage-handFree Image from public domain licenseLeaf from a Beatus Manuscript: the Lamb at the Foot of the Cross, Flanked by Two Angels; The Calling of Saint John with the… https://www.rawpixel.com/image/9087764/image-medieval-saint-lambFree Image from public domain licenseGalaxy planets frame background, cute space illustration https://www.rawpixel.com/image/11731164/galaxy-planets-frame-background-cute-space-illustrationView licenseDistinguished Service Cross and ribbon issued to Lewis Broadus, National Museum of African American History and Culture https://www.rawpixel.com/image/8845017/photo-image-art-vintage-goldFree Image from public domain license"Painting from The Saturday Evening Post."; "Additional copies may be obtained upon request from the Division of Public… https://www.rawpixel.com/image/9976096/image-faces-vintage-illustrationsFree Image from public domain licenseRakhsh Saves Rustam from a Lion (recto), Text (verso), Folio from a Shahnama (Book of Kings) https://www.rawpixel.com/image/11933099/image-arrows-rose-paperFree Image from public domain licenseAdvertisement in The Moving Picture World (1916) chromolithograph art by Burton Rice. 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Cmdr.… https://www.rawpixel.com/image/9647143/photo-image-face-steam-handFree Image from public domain licenseNight starry sky background https://www.rawpixel.com/image/11731163/night-starry-sky-backgroundView licenseSee real warfare - "over there" cantonment - made possible by blood-not money 5th Regiment Armory, Baltimore - tickets for… https://www.rawpixel.com/image/8683014/image-art-vintage-public-domainFree Image from public domain licensePortolan atlas of the Mediterranean Sea, western Europe, and the northwest coast of Africa: Eastern Mediterranean (ca. 1590)… https://www.rawpixel.com/image/2041316/eastern-mediterranean-mapFree Image from public domain licenseRemember the girl behind the man behind the gun--Y.W.C.A. 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