Cite

"An Incident of the Smallpox Epidemic in Montreal. Drawn by Robert Harris."

MLA

Hansen, Bert, 1944-. "An Incident of the Smallpox Epidemic in Montreal. Drawn by Robert Harris.". Box 5, folder 7. 1885 November 28. https://collections.library.yale.edu/catalog/32327112.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 5, folder 7"])(1885 November 28)["An Incident of the Smallpox Epidemic in Montreal. Drawn by Robert Harris."]. https://collections.library.yale.edu/catalog/32327112.