si-national-portrait-gallery:Hugh Judson Kilpatrick, Unidentified Artist, c. 1868, Smithsonian: Nati
si-national-portrait-gallery:Hugh Judson Kilpatrick, Unidentified Artist, c. 1868, Smithsonian: National Portrait GallerySize: Image: 13.5 x 9.2 cm (5 5/16 x 3 5/8")Medium: Albumen silver printhttps://npg.si.edu/object/npg_S_NPG.85.117 -- source link