Cite

"Echo"

MLA

Loy, Mina (1882-1966). "Echo". Box 5, folder 88. n.d.. https://collections.library.yale.edu/catalog/11699210.

APA, 6th edition

Loy, Mina (1882-1966). (["Box 5, folder 88"])(n.d.)["Echo"]. https://collections.library.yale.edu/catalog/11699210.