Cite

Pratt, John B.

MLA

Whitman, Walt, 1819-1892. Pratt, John B.. Box 1, folder 30. 1870 Mar 15. https://collections.library.yale.edu/catalog/2053664.

APA, 6th edition

Whitman, Walt, 1819-1892. (["Box 1, folder 30"])(1870 Mar 15)[Pratt, John B.]. https://collections.library.yale.edu/catalog/2053664.