Cite

"Medical Counselors of the Crown Prince of Germany."

MLA

Hansen, Bert, 1944-. "Medical Counselors of the Crown Prince of Germany.". Box 12, folder 27. 1888 February 4. https://collections.library.yale.edu/catalog/32331981.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 12, folder 27"])(1888 February 4)["Medical Counselors of the Crown Prince of Germany."]. https://collections.library.yale.edu/catalog/32331981.