MLA

Hansen, Bert, 1944-. "Miss Columbia, 'Why don't you send your patients to the United States, Mr. Punch? The Old World has sent us worse cases, and they always recover'!". Box 5, folder 2. 1884 June 7. https://collections.library.yale.edu/catalog/32331100.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 5, folder 2"])(1884 June 7)["Miss Columbia, 'Why don't you send your patients to the United States, Mr. Punch? The Old World has sent us worse cases, and they always recover'!"]. https://collections.library.yale.edu/catalog/32331100.