MLA

Wharton, Edith, 1862-1937. The Delineator. Box 36, folder 1086. 1926-29. https://collections.library.yale.edu/catalog/17111170.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 36, folder 1086"])(1926-29)[The Delineator]. https://collections.library.yale.edu/catalog/17111170.