si-african-american-history:W.E.B. Du Bois, 1918, Smithsonian: National Museum of African American H
si-african-american-history:W.E.B. Du Bois, 1918, Smithsonian: National Museum of African American History and CultureSize: H x W (Image and Sheet): 13 5/8 × 10 5/16 in. (34.6 × 26.2 cm)Medium: silver and photographic gelatin on photographic paperhttps://nmaahc.si.edu/object/nmaahc_2009.37.3 -- source link