Various papers (C 2370-2371)
MLA
Boswell, James, 1740-1795. Various papers (C 2370-2371). Box 30, folder 766. n.d.. https://collections.library.yale.edu/catalog/32501142.
APA, 6th edition
Boswell, James, 1740-1795. (["Box 30, folder 766"])(n.d.)[Various papers (C 2370-2371)]. https://collections.library.yale.edu/catalog/32501142.