MLA

Plowden, David (1932). Grain Elevators Beside former Illinois Central Railroad right-of-way. Manson, Iowa (304-2203). Box 178. 2004 March. https://collections.library.yale.edu/catalog/10594456.

APA, 6th edition

Plowden, David (1932). (["Box 178"])(2004 March)[Grain Elevators Beside former Illinois Central Railroad right-of-way. Manson, Iowa (304-2203)]. https://collections.library.yale.edu/catalog/10594456.