Cite

"Bob Ingersoll, The 'Illustrious Infidel'."

MLA

Hansen, Bert, 1944-. "Bob Ingersoll, The 'Illustrious Infidel'.". Box 8, folder 28. 1881 May 11. https://collections.library.yale.edu/catalog/32327084.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 8, folder 28"])(1881 May 11)["Bob Ingersoll, The 'Illustrious Infidel'."]. https://collections.library.yale.edu/catalog/32327084.