MLA

Plowden, David (1932). Captain Al Ritteman, Steamer William A. McGonagle, Kinsman Lines. Buffalo, New York (1085-1109). Box 66. 1985 October. https://collections.library.yale.edu/catalog/2041507.

APA, 6th edition

Plowden, David (1932). (["Box 66"])(1985 October)[Captain Al Ritteman, Steamer William A. McGonagle, Kinsman Lines. Buffalo, New York (1085-1109)]. https://collections.library.yale.edu/catalog/2041507.