Washington, D.C. Playing soccer in a physical education class at Woodrow Wilson High School. Sourced from the Library of… https://www.rawpixel.com/image/12338053/image-plant-person-grassFree Image from public domain licenseCanton. Chinese Ladies, Forming Part of the Establishment of a Mandarin of the First Class or Blue Button. by Pierre Joseph… https://www.rawpixel.com/image/14304610/image-face-person-artFree Image from public domain licenseA bespectacled monkey dressed as human is teaching a class room full of dogs musical scales. Etching by Z. Notermann. https://www.rawpixel.com/image/14010612/image-dog-horse-cartoonFree Image from public domain licensePa tah lom boo, Tartar Brigadier-General, Second Class Mandarin, or Blue Button, with Some Members of His Family. by Pierre… https://www.rawpixel.com/image/14305653/photo-image-face-people-artFree Image from public domain licenseOfficier te midden van arbeiders en aan tafel bij hooggeplaatste mannen (1920) by Mihály Biró and Arbeiter Buchhandlung https://www.rawpixel.com/image/13768327/image-paper-cartoon-faceFree Image from public domain licenseMt Cook Bible Class Hockey Team (10 October 1908) by Zak Joseph Zachariah. https://www.rawpixel.com/image/13030047/cook-bible-class-hockey-team-10-october-1908-zak-joseph-zachariahFree Image from public domain licenseSouthington, Connecticut. Class instruction. 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First… https://www.rawpixel.com/image/12270703/photo-image-face-hand-personFree Image from public domain licenseSinging class. Greenbelt, Maryland. 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