Cite

Pittsburgh Lake Erie Railroad Bridge, Ohio River. Beaver Falls, Pennsylvania (PB-567-1202)

MLA

Plowden, David (1932). Pittsburgh Lake Erie Railroad Bridge, Ohio River. Beaver Falls, Pennsylvania (PB-567-1202). Box 51. 1967 May. https://collections.library.yale.edu/catalog/2041249.

APA, 6th edition

Plowden, David (1932). (["Box 51"])(1967 May)[Pittsburgh Lake Erie Railroad Bridge, Ohio River. Beaver Falls, Pennsylvania (PB-567-1202)]. https://collections.library.yale.edu/catalog/2041249.