Pit No. 2 for the Porcupine Gold Mining Company showing temporary sluice box, Porcupine, Alaska, ca. 1907

Chicago citation style
Draper, Herbert Horace, 1855-1913. Pit No. 2 for the Porcupine Gold Mining Company showing temporary sluice box, Porcupine, Alaska, ca. 1907. ca. 1907. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2359. (Accessed June 25, 2018.)
APA citation style
Draper, Herbert Horace, 1855-1913, (ca. 1907) Pit No. 2 for the Porcupine Gold Mining Company showing temporary sluice box, Porcupine, Alaska, ca. 1907. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2359
MLA citation style
Draper, Herbert Horace, 1855-1913. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/alaskawcanada/id/2359>.
Note: These citations are programmatically generated and may be incomplete.