Keystone Canyon near Valdez, Alaska, ca. 1909

Chicago citation style
Cantwell, George G.. Keystone Canyon near Valdez, Alaska, ca. 1909. ca. 1909. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/4786. (Accessed September 21, 2018.)
APA citation style
Cantwell, George G., (ca. 1909) Keystone Canyon near Valdez, Alaska, ca. 1909. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/4786
MLA citation style
Cantwell, George G.. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/4786>.
Note: These citations are programmatically generated and may be incomplete.