Treadwell Gold Mining Company mill and mine, Douglas Island, Alaska, ca. 1889

Chicago citation style
La Roche, Frank. Treadwell Gold Mining Company mill and mine, Douglas Island, Alaska, ca. 1889. ca. 1889. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/laroche/id/133. (Accessed July 22, 2018.)
APA citation style
La Roche, Frank, (ca. 1889) Treadwell Gold Mining Company mill and mine, Douglas Island, Alaska, ca. 1889. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/laroche/id/133
MLA citation style
La Roche, Frank. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/laroche/id/133>.
Note: These citations are programmatically generated and may be incomplete.