Green River. Split Mountain Canyon, not far from no. 694, above it. Photo shows two boats anchored, 1871 Expedition? Old nos. 138, 344, 363, 738.

Chicago citation style
War Department. Office of the Chief of Engineers. Powell Survey. (1869 - ca. 1874). Green River. Split Mountain Canyon, not far from no. 694, above it. Photo shows two boats anchored, 1871 Expedition? Old nos. 138, 344, 363, 738.. 1871-01-01/1878-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/517938. (Accessed July 17, 2018.)
APA citation style
War Department. Office of the Chief of Engineers. Powell Survey. (1869 - ca. 1874), (1871-01-01/1878-12-31) Green River. Split Mountain Canyon, not far from no. 694, above it. Photo shows two boats anchored, 1871 Expedition? Old nos. 138, 344, 363, 738.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/517938
MLA citation style
War Department. Office of the Chief of Engineers. Powell Survey. (1869 - ca. 1874). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/517938>.
Note: These citations are programmatically generated and may be incomplete.