MLA

Plowden, David (1932). Steamer City of Keansburg at Bear Mountain Landing on Hudson River, Bear Mountain Bridge in Background. Bear Mountain Landing, New York (665-220). Box 70. 1965 June. https://collections.library.yale.edu/catalog/2041631.

APA, 6th edition

Plowden, David (1932). (["Box 70"])(1965 June)[Steamer City of Keansburg at Bear Mountain Landing on Hudson River, Bear Mountain Bridge in Background. Bear Mountain Landing, New York (665-220)]. https://collections.library.yale.edu/catalog/2041631.