Cite

Power Shovel, Empire Mine. Palmer, Michigan (679-680)

MLA

Plowden, David (1932). Power Shovel, Empire Mine. Palmer, Michigan (679-680). Box 143. 1979 June. https://collections.library.yale.edu/catalog/2042794.

APA, 6th edition

Plowden, David (1932). (["Box 143"])(1979 June)[Power Shovel, Empire Mine. Palmer, Michigan (679-680)]. https://collections.library.yale.edu/catalog/2042794.