Erick Larson climbing North Index Peak with valley in the background, 1940

Chicago citation style
Trott, Otto. Erick Larson climbing North Index Peak with valley in the background, 1940. 1940. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/social/id/8741. (Accessed July 17, 2018.)
APA citation style
Trott, Otto, (1940) Erick Larson climbing North Index Peak with valley in the background, 1940. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/social/id/8741
MLA citation style
Trott, Otto. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/social/id/8741>.
Note: These citations are programmatically generated and may be incomplete.