MLA

Koch, Frederick R. (Frederick Robinson). Texier, Rosalie. Box 19, folder 298-303. 1899-1905. https://collections.library.yale.edu/catalog/2032836.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 19, folder 298-303"])(1899-1905)[Texier, Rosalie]. https://collections.library.yale.edu/catalog/2032836.