Hand drawn winged bean. Original from Biodiversity Heritage Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2880408/free-illustration-image-vine-leaf-tropicalFree Image from public domain licenseUp-to-date map of the world war (1942) by Manila Shinbun-sha. Original from The Beinecke Rare Book & Manuscript Library.… https://www.rawpixel.com/image/2041112/up-to-date-map-the-world-warFree Image from public domain licenseProposed Fine Arts Museum, World's Columbian Exposition, Chicago, Illinois, Elevation Sketches by John Wellborn Root… https://www.rawpixel.com/image/8937851/image-paper-book-artsFree Image from public domain licenseMills Building, San Francisco, California, Design Sketch by Burnham and Root (Architect) https://www.rawpixel.com/image/9054290/image-paper-united-states-buildingFree Image from public domain licenseFort Santiago, historical landmark in Philippines, line art collage element https://www.rawpixel.com/image/12635616/fort-santiago-historical-landmark-philippines-line-art-collage-elementView licenseAntique illustration of winged bean plant https://www.rawpixel.com/image/263007/premium-illustration-image-botanical-public-domain-goa-watercolor-antiqueView license