Andrew Gronholdt posing with petrified tree stump, Unga Island, Alaska, October 1961

Chicago citation style
Andrew Gronholdt posing with petrified tree stump, Unga Island, Alaska, October 1961. October 1961. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2964. (Accessed July 22, 2018.)
APA citation style
(October 1961) Andrew Gronholdt posing with petrified tree stump, Unga Island, Alaska, October 1961. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2964
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2964>.
Note: These citations are programmatically generated and may be incomplete.