"A Board of Health Doctor in a New York Tenement"
MLA
Hansen, Bert, 1944-. "A Board of Health Doctor in a New York Tenement". Box 5, folder 15. 1889 August 10. https://collections.library.yale.edu/catalog/32331116.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 5, folder 15"])(1889 August 10)["A Board of Health Doctor in a New York Tenement"]. https://collections.library.yale.edu/catalog/32331116.