Cite

"Improved Astronomy, by Puck's Own Proctor."

MLA

Hansen, Bert, 1944-. "Improved Astronomy, by Puck's Own Proctor.". Box 11, folder 3. 1879 December 3. https://collections.library.yale.edu/catalog/32326724.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 11, folder 3"])(1879 December 3)["Improved Astronomy, by Puck's Own Proctor."]. https://collections.library.yale.edu/catalog/32326724.