"What We Eat and Drink."
MLA
Hansen, Bert, 1944-. "What We Eat and Drink.". Box 11, folder 1. 1879 February 19. https://collections.library.yale.edu/catalog/32331728.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 11, folder 1"])(1879 February 19)["What We Eat and Drink."]. https://collections.library.yale.edu/catalog/32331728.