Cite

"Santa, old man, that's sure a purty team...."

MLA

Harrington, Oliver W. (Oliver Wendell), 1912-1995. "Santa, old man, that's sure a purty team....". Box 3 (Oversize). undated. https://collections.library.yale.edu/catalog/33075317.

APA, 6th edition

Harrington, Oliver W. (Oliver Wendell), 1912-1995. (["Box 3 (Oversize)"])(undated)["Santa, old man, that's sure a purty team...."]. https://collections.library.yale.edu/catalog/33075317.