Cite

Magrini, Erminia (from other correspondents)

MLA

Koch, Frederick R. (Frederick Robinson). Magrini, Erminia (from other correspondents). Box 50, folder 1047. 1918-23, n.d.. https://collections.library.yale.edu/catalog/16101620.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 50, folder 1047"])(1918-23, n.d.)[Magrini, Erminia (from other correspondents)]. https://collections.library.yale.edu/catalog/16101620.