Caisson no. 4, Tacoma Narrows Bridge construction, March 28, 1939

Chicago citation style
Simmer. Caisson no. 4, Tacoma Narrows Bridge construction, March 28, 1939. 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/86. (Accessed June 20, 2018.)
APA citation style
Simmer, (1939) Caisson no. 4, Tacoma Narrows Bridge construction, March 28, 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/86
MLA citation style
Simmer. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/86>.
Note: These citations are programmatically generated and may be incomplete.