"Roosevelt Dam. General view of nearly completed north spillway."

Chicago citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988. "Roosevelt Dam. General view of nearly completed north spillway.". 1936-10-18. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294621. (Accessed June 24, 2018.)
APA citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988, (1936-10-18) "Roosevelt Dam. General view of nearly completed north spillway.". Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294621
MLA citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/294621>.
Note: These citations are programmatically generated and may be incomplete.