Cite

Ford, C. H., postcards to his mother

MLA

Ford, Charles Henri, 1908-2002. Ford, C. H., postcards to his mother. Box 9. 1934. https://collections.library.yale.edu/catalog/32247733.

APA, 6th edition

Ford, Charles Henri, 1908-2002. (["Box 9"])(1934)[Ford, C. H., postcards to his mother]. https://collections.library.yale.edu/catalog/32247733.