Cite

Power Shovel, Limestone Quarry. Upper Peninsula, Michigan (ISM-42)

MLA

Plowden, David (1932). Power Shovel, Limestone Quarry. Upper Peninsula, Michigan (ISM-42). Box 8. 1979. https://collections.library.yale.edu/catalog/2036760.

APA, 6th edition

Plowden, David (1932). (["Box 8"])(1979)[Power Shovel, Limestone Quarry. Upper Peninsula, Michigan (ISM-42)]. https://collections.library.yale.edu/catalog/2036760.