MLA

White, Walter, 1893-1955. Background materials and notes. Box 24, folder 222-227. 1944-1945. https://collections.library.yale.edu/catalog/16745951.

APA, 6th edition

White, Walter, 1893-1955. (["Box 24, folder 222-227"])(1944-1945)[Background materials and notes]. https://collections.library.yale.edu/catalog/16745951.