"Hooping Up", Train Orders to Conductor, Baltimore Ohio Railroad. Harper's Ferry, West Virginia (HF-1961)
MLA
Plowden, David (1932). "Hooping Up", Train Orders to Conductor, Baltimore Ohio Railroad. Harper's Ferry, West Virginia (HF-1961). Box 77. 1961. https://collections.library.yale.edu/catalog/2041808.
APA, 6th edition
Plowden, David (1932). (["Box 77"])(1961)["Hooping Up", Train Orders to Conductor, Baltimore Ohio Railroad. Harper's Ferry, West Virginia (HF-1961)]. https://collections.library.yale.edu/catalog/2041808.
