MLA

Plowden, David (1932). Erie-Lackawanna Railroad, Hoboken Ferry, Hudson River, Ferryboats Elmira in front and Elmira in rear. New York, New York (NYH-FB-24). Box 68. 1963. https://collections.library.yale.edu/catalog/2041553.

APA, 6th edition

Plowden, David (1932). (["Box 68"])(1963)[Erie-Lackawanna Railroad, Hoboken Ferry, Hudson River, Ferryboats Elmira in front and Elmira in rear. New York, New York (NYH-FB-24)]. https://collections.library.yale.edu/catalog/2041553.