The Animas River, near the mouth of Arastra Gulch, looking down toward Sultan Mountain. Silverton Quadrangle. San Juan County, Colorado.

Chicago citation style
Department of the Interior. General Land Office. U.S. Geological and Geographic Survey of the Territories. (1874 - 6/30/1879). The Animas River, near the mouth of Arastra Gulch, looking down toward Sultan Mountain. Silverton Quadrangle. San Juan County, Colorado.. 1875. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/517151. (Accessed September 20, 2018.)
APA citation style
Department of the Interior. General Land Office. U.S. Geological and Geographic Survey of the Territories. (1874 - 6/30/1879), (1875) The Animas River, near the mouth of Arastra Gulch, looking down toward Sultan Mountain. Silverton Quadrangle. San Juan County, Colorado.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/517151
MLA citation style
Department of the Interior. General Land Office. U.S. Geological and Geographic Survey of the Territories. (1874 - 6/30/1879). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/517151>.
Note: These citations are programmatically generated and may be incomplete.