MLA

Schieffelin, Jacob, 1793-1880. "A Journal During a Lady's Courtship," by Hannah Schieffelin, 1780 (typescript carbon). Box 1, folder 1. n.d.. https://collections.library.yale.edu/catalog/16706045.

APA, 6th edition

Schieffelin, Jacob, 1793-1880. (["Box 1, folder 1"])(n.d.)["A Journal During a Lady's Courtship," by Hannah Schieffelin, 1780 (typescript carbon)]. https://collections.library.yale.edu/catalog/16706045.