"Now dont bother your papa, he's had a hard day firing 2000 people in his factory!"
MLA
Harrington, Oliver W. (Oliver Wendell), 1912-1995. "Now dont bother your papa, he's had a hard day firing 2000 people in his factory!". Box 35 (Oversize). undated. https://collections.library.yale.edu/catalog/33075797.
APA, 6th edition
Harrington, Oliver W. (Oliver Wendell), 1912-1995. (["Box 35 (Oversize)"])(undated)["Now dont bother your papa, he's had a hard day firing 2000 people in his factory!"]. https://collections.library.yale.edu/catalog/33075797.