MLA

Douglas, Norman, 1868-1952. Senhouse, Roger. Box 45. 1937-1949. https://collections.library.yale.edu/catalog/16454758.

APA, 6th edition

Douglas, Norman, 1868-1952. (["Box 45"])(1937-1949)[Senhouse, Roger]. https://collections.library.yale.edu/catalog/16454758.