Cite

Ice cakes at Forty Mile, Y[ukon] Ter[ritory], 15 feet thick

MLA

Goetzman, M. W. Ice Cakes at Forty Mile, Y[Ukon] Ter[Ritory], 15 Feet Thick. 1901. https://collections.library.yale.edu/catalog/2011696.

APA, 6th edition

Goetzman, M. W. (1901). Ice cakes at Forty Mile, Y[ukon] Ter[ritory], 15 feet thick [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2011696.