Cite

[Machine Age: General factory photos]

MLA

Pound, Ezra, 1885-1972. [Machine Age: General factory photos]. Box 1 | Folder 38. undated. https://collections.library.yale.edu/catalog/10080177.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 1 | Folder 38"])(undated)[[Machine Age: General factory photos]]. https://collections.library.yale.edu/catalog/10080177.