MLA

Heller, Louis Herman, 1839-1928, Watkins' Yosemite Art Gallery, Watkins, Carleton E., 1829-1916. Photographs of individuals and the Modoc Indian War.. Box 1 | Folder 20. 1864-1900.. https://collections.library.yale.edu/catalog/10001609.

APA, 6th edition

Heller, Louis Herman, 1839-1928, & Watkins' Yosemite Art Gallery, & Watkins, Carleton E., 1829-1916. (["Box 1 | Folder 20"])(1864-1900.)[Photographs of individuals and the Modoc Indian War.]. https://collections.library.yale.edu/catalog/10001609.