"A bulge in the ice at Hell Gate on the Columbia River caused by the accumulation of floe ice piling up at this point."

Chicago citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988. "A bulge in the ice at Hell Gate on the Columbia River caused by the accumulation of floe ice piling up at this point.". 1936-02-17. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294272. (Accessed June 22, 2018.)
APA citation style
Department of the Interior. Bureau of Reclamation. Engineering and Research Center. 5/18/1981-3/4/1988, (1936-02-17) "A bulge in the ice at Hell Gate on the Columbia River caused by the accumulation of floe ice piling up at this point.". Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/294272
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/294272>.
Note: These citations are programmatically generated and may be incomplete.