MLA

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. No. 1001. Mexico (republic). Ejército. Estado Mayor. Coleccion de Itinerarios. Box 64, folder 493. n.d.. https://collections.library.yale.edu/catalog/17265199.

APA, 6th edition

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. (["Box 64, folder 493"])(n.d.)[No. 1001. Mexico (republic). Ejército. Estado Mayor. Coleccion de Itinerarios]. https://collections.library.yale.edu/catalog/17265199.