MLA

Plowden, David (1932). Herb Brandt, Oiler, Steamer S. T. Crapo, Inland Lakes Management. Probably Waukegan, Illinois (1085-678). Box 66. 1985 October. https://collections.library.yale.edu/catalog/2041521.

APA, 6th edition

Plowden, David (1932). (["Box 66"])(1985 October)[Herb Brandt, Oiler, Steamer S. T. Crapo, Inland Lakes Management. Probably Waukegan, Illinois (1085-678)]. https://collections.library.yale.edu/catalog/2041521.