MLA

Johnson, James Weldon, 1871-1938. Johnsons, John B. Nail, John E. Nail, Grayce Fairfax Nail, Brenda Randolph, and Oliver Randolph, Great Barrington, Massachusetts. Box 109, folder 962. 1929. https://collections.library.yale.edu/catalog/15814941.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 109, folder 962"])(1929)[Johnsons, John B. Nail, John E. Nail, Grayce Fairfax Nail, Brenda Randolph, and Oliver Randolph, Great Barrington, Massachusetts]. https://collections.library.yale.edu/catalog/15814941.