Cite

"The Century's Progress in Scientific Medicine."

MLA

Hansen, Bert, 1944-. "The Century's Progress in Scientific Medicine.". Box 14, folder 5. 1899 June. https://collections.library.yale.edu/catalog/32334897.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 14, folder 5"])(1899 June)["The Century's Progress in Scientific Medicine."]. https://collections.library.yale.edu/catalog/32334897.