MLA

Wilder, Thornton, 1897-1975. Tunney, Gene. Box 60, folder 1649-50. 1928-74. https://collections.library.yale.edu/catalog/17056660.

APA, 6th edition

Wilder, Thornton, 1897-1975. (["Box 60, folder 1649-50"])(1928-74)[Tunney, Gene]. https://collections.library.yale.edu/catalog/17056660.