MLA

Huntington, Ellsworth, 1876-1947. American Eugenics Society. Box 74, folder 2860. 1935. https://collections.library.yale.edu/catalog/32505876.

APA, 6th edition

Huntington, Ellsworth, 1876-1947. (["Box 74, folder 2860"])(1935)[American Eugenics Society]. https://collections.library.yale.edu/catalog/32505876.