Cite

"Better Not Vaccinate than Vaccinate with Impure Virus."

MLA

Hansen, Bert, 1944-. "Better Not Vaccinate than Vaccinate with Impure Virus.". Box 8, folder 17. 1880 June 16. https://collections.library.yale.edu/catalog/32327070.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 8, folder 17"])(1880 June 16)["Better Not Vaccinate than Vaccinate with Impure Virus."]. https://collections.library.yale.edu/catalog/32327070.