Cite

"Mrs. Alfred Stieglitz"

MLA

Stieglitz, Alfred, 1864-1946. "Mrs. Alfred Stieglitz". Box 130, folder 2510. ca. 1915. https://collections.library.yale.edu/catalog/2002549.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 130, folder 2510"])(ca. 1915)["Mrs. Alfred Stieglitz"]. https://collections.library.yale.edu/catalog/2002549.