MLA

H.S. Crocker Co. Lith., San Francisco, and California. [Wagon Train]. 0AD. https://collections.library.yale.edu/catalog/2016562.

APA, 6th edition

H.S. Crocker Co. Lith., S. F., & C. (0 C.E.). [Wagon Train] [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2016562.