"The Newest Cure."
MLA
Hansen, Bert, 1944-. "The Newest Cure.". Box 11, folder 29. 1909 October 20. https://collections.library.yale.edu/catalog/32326852.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 11, folder 29"])(1909 October 20)["The Newest Cure."]. https://collections.library.yale.edu/catalog/32326852.