Mt. Wilbur at Many Glaciers, Glacier National Park, ca. 1931

Chicago citation style
Pickett, Lee. Mt. Wilbur at Many Glaciers, Glacier National Park, ca. 1931. ca. 1931. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1366. (Accessed April 26, 2018.)
APA citation style
Pickett, Lee, (ca. 1931) Mt. Wilbur at Many Glaciers, Glacier National Park, ca. 1931. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1366
MLA citation style
Pickett, Lee. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1366>.
Note: These citations are programmatically generated and may be incomplete.