MLA

Hermant, Abel, 1862-1950. Abel Hermant letters to George Hall. Box 1 | Folder 2. 1887, 1889. https://collections.library.yale.edu/catalog/11405748.

APA, 6th edition

Hermant, Abel, 1862-1950. (["Box 1 | Folder 2"])(1887, 1889)[Abel Hermant letters to George Hall]. https://collections.library.yale.edu/catalog/11405748.