Mammoth tusk being transported by dog sled, location unknown, n.d

Chicago citation style
Mammoth tusk being transported by dog sled, location unknown, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/477. (Accessed July 23, 2018.)
APA citation style
Mammoth tusk being transported by dog sled, location unknown, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/477
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/477>.
Note: These citations are programmatically generated and may be incomplete.