Cite

Photographs of Montana and South Dakota [graphic].

MLA

Jackson, William Henry, 1843-1942. Photographs of Montana and South Dakota [graphic].. ca. 1897-1924.. https://collections.library.yale.edu/catalog/2009555.

APA, 6th edition

Jackson, William Henry, 1843-1942. (ca. 1897-1924.)[Photographs of Montana and South Dakota [graphic].]. https://collections.library.yale.edu/catalog/2009555.