"Automobiles"
MLA
Thayer, Scofield, 1889-1982. "Automobiles". Box 57, folder 1548. n.d.. https://collections.library.yale.edu/catalog/17142334.
APA, 6th edition
Thayer, Scofield, 1889-1982. (["Box 57, folder 1548"])(n.d.)["Automobiles"]. https://collections.library.yale.edu/catalog/17142334.