Denis Bourdon, Cabinet card of Frederick Douglass with his grandson Joseph Douglass, May 10, 1894, albumen and silver on photographic paper on card mount; H x W: 6 1/2 × 4 1/4 in. (16.5 × 10.8 cm), National Museum of African American History and Culture, Washington, D.C. https://dartabase.art/cite/smithsonian/ld1-1725446217400-1725446230804-1