MLA

Davis, Andrew Jackson, 1826-1910. 1848-1849. Box 1, folder 2. 1848-1929. https://collections.library.yale.edu/catalog/32528444.

APA, 6th edition

Davis, Andrew Jackson, 1826-1910. (["Box 1, folder 2"])(1848-1929)[1848-1849]. https://collections.library.yale.edu/catalog/32528444.