G.W.M. Nutt and Minnie Warren, c. 1860-1870, Smithsonian: National Portrait GallerySize: Plate: 9.5
G.W.M. Nutt and Minnie Warren, c. 1860-1870, Smithsonian: National Portrait GallerySize: Plate: 9.5 × 6.3 × 0.3 cm (3 ¾ × 2 ½ × 1/8")Medium: Glass plate collodion negativehttp://npg.si.edu/object/npg_NPG.81.M3268.2 -- source link
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