MLA

Davis, W. W. H. (William Watts Hart), 1820-1910. Correspondence. Box 5, folder 69. 1864-65. https://collections.library.yale.edu/catalog/17200219.

APA, 6th edition

Davis, W. W. H. (William Watts Hart), 1820-1910. (["Box 5, folder 69"])(1864-65)[Correspondence]. https://collections.library.yale.edu/catalog/17200219.