MLA

Plowden, David (1932). Firehold, Steamer S. T. Crapo, Inland Lakes Management. Probably Waukegan, Illinois (1085-642). Box 61. 1985 October. https://collections.library.yale.edu/catalog/2041416.

APA, 6th edition

Plowden, David (1932). (["Box 61"])(1985 October)[Firehold, Steamer S. T. Crapo, Inland Lakes Management. Probably Waukegan, Illinois (1085-642)]. https://collections.library.yale.edu/catalog/2041416.