MLA

Johnson, James Weldon, 1871-1938. Johnsons at "Five Acres," Great Barrington, Massachusetts during construction. Box 109, folder 955. circa 1926. https://collections.library.yale.edu/catalog/15814935.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 109, folder 955"])(circa 1926)[Johnsons at "Five Acres," Great Barrington, Massachusetts during construction]. https://collections.library.yale.edu/catalog/15814935.