Cite

[Photographs of the Black Butte Mine].

MLA

[Photographs of the Black Butte Mine]. 0AD. https://collections.library.yale.edu/catalog/32369019.

APA, 6th edition

[Photographs of the Black Butte Mine]. (0 C.E.). [Pictorial works, Photographs]. https://collections.library.yale.edu/catalog/32369019.