Cite

De Kay, James E.

MLA

Cooper, James Fenimore, 1789-1851. De Kay, James E.. Box 13, folder 357. 1849-1851. https://collections.library.yale.edu/catalog/17073665.

APA, 6th edition

Cooper, James Fenimore, 1789-1851. (["Box 13, folder 357"])(1849-1851)[De Kay, James E.]. https://collections.library.yale.edu/catalog/17073665.