MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer, Group of workmen outside motor repair shop (in Series I). Box 48, folder 1202. circa 1920. https://collections.library.yale.edu/catalog/10257550.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 48, folder 1202"])(circa 1920)[Unknown photographer, Group of workmen outside motor repair shop (in Series I)]. https://collections.library.yale.edu/catalog/10257550.