MLA

Newell, Peter, 1862-1924. Scott, Nancy McCormick, portrait by Peter Newell McCormick. Box 244, folder 3365. 1935. https://collections.library.yale.edu/catalog/32244014.

APA, 6th edition

Newell, Peter, 1862-1924. (["Box 244, folder 3365"])(1935)[Scott, Nancy McCormick, portrait by Peter Newell McCormick]. https://collections.library.yale.edu/catalog/32244014.