Carleton E. Watkins
1861
Sentinel. Front View: 3270 Feet.

Albumen silver print, from glass negative
43.1 × 51.6 cm (16 15/16 × 20 5/16 in.) (image) 53.9 × 67 cm (21 1/4 × 26 3/8 in.) (mount)
 
Metropolitan Museum of Art
Gilman Collection, Museum Purchase, 2005, Accession Number: 2005.100.1188
 
LL/105796