MLA

Plowden, David (1932). Waiting Room, Former Chicago Eastern Illinois Railroad Depot. Princeton, Indiana (1066-526). Box 75. 1966 October. https://collections.library.yale.edu/catalog/2041780.

APA, 6th edition

Plowden, David (1932). (["Box 75"])(1966 October)[Waiting Room, Former Chicago Eastern Illinois Railroad Depot. Princeton, Indiana (1066-526)]. https://collections.library.yale.edu/catalog/2041780.