MLA

Phillips, Ulrich Bonnell, 1877-1934. Logging. Box 2, folder 4. Circa 1900-circa 1930. https://collections.library.yale.edu/catalog/10019913.

APA, 6th edition

Phillips, Ulrich Bonnell, 1877-1934. (["Box 2, folder 4"])(Circa 1900-circa 1930)[Logging]. https://collections.library.yale.edu/catalog/10019913.