Cite

"Mr. Bergh to the Rescue."

MLA

Hansen, Bert, 1944-. "Mr. Bergh to the Rescue.". Box 3, folder 19. 1871 August 19. https://collections.library.yale.edu/catalog/32329489.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 3, folder 19"])(1871 August 19)["Mr. Bergh to the Rescue."]. https://collections.library.yale.edu/catalog/32329489.