Tugboats, barges, and caisson, Tacoma Narrows Bridge construction, ca. 1939

Chicago citation style
[probably Simmer]. Tugboats, barges, and caisson, Tacoma Narrows Bridge construction, ca. 1939. ca. 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/85. (Accessed August 19, 2018.)
APA citation style
[probably Simmer], (ca. 1939) Tugboats, barges, and caisson, Tacoma Narrows Bridge construction, ca. 1939. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/85
MLA citation style
[probably Simmer]. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/farquharson/id/85>.
Note: These citations are programmatically generated and may be incomplete.