Two miners digging a mining shaft, probably Yukon Territory, ca. 1900

Chicago citation style
Cantwell, George G.. Two miners digging a mining shaft, probably Yukon Territory, ca. 1900. ca. 1900. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/3002. (Accessed November 18, 2018.)
APA citation style
Cantwell, George G., (ca. 1900) Two miners digging a mining shaft, probably Yukon Territory, ca. 1900. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/3002
MLA citation style
Cantwell, George G.. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/3002>.
Note: These citations are programmatically generated and may be incomplete.