Cite

Northern Pacific Railway Freight Train. Near Helena, Montana (NP-852-1-4)

MLA

Plowden, David (1932). Northern Pacific Railway Freight Train. Near Helena, Montana (NP-852-1-4). Box 73. 1952 August. https://collections.library.yale.edu/catalog/2041701.

APA, 6th edition

Plowden, David (1932). (["Box 73"])(1952 August)[Northern Pacific Railway Freight Train. Near Helena, Montana (NP-852-1-4)]. https://collections.library.yale.edu/catalog/2041701.