MLA

Jackson, William Henry, 1843-1942. Jarvis Hall. Box 1. ca. 1879-1894. https://collections.library.yale.edu/catalog/2004757.

APA, 6th edition

Jackson, William Henry, 1843-1942. (["Box 1"])(ca. 1879-1894)[Jarvis Hall]. https://collections.library.yale.edu/catalog/2004757.