Cite

"Machine Age" (folder 5 of 7) Landscape/Farm photos

MLA

"Machine Age" (Folder 5 of 7) Landscape/Farm Photos. 0AD. https://collections.library.yale.edu/catalog/17165164.

APA, 6th edition

"Machine Age" (folder 5 of 7) Landscape/Farm photos. (0 C.E.). [Photographic prints]. https://collections.library.yale.edu/catalog/17165164.