si-african-american-history:Ambrotype of a Civil War soldier, 1861-1865, Smithsonian: National Museu
si-african-american-history:Ambrotype of a Civil War soldier, 1861-1865, Smithsonian: National Museum of African American History and CultureSize: Closed: 3 × 2 5/8 × 7/8 in. (7.6 × 6.7 × 2.2 cm)Medium: collodion and silver on glass photographic plateshttps://nmaahc.si.edu/object/nmaahc_2008.9.2 -- source link