Cite

"Sketch for Glass," watercolor and ink on paper

MLA

Stieglitz, Alfred, 1864-1946. "Sketch for Glass," watercolor and ink on paper. Box 159, folder 2917. 1908. https://collections.library.yale.edu/catalog/2002427.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 159, folder 2917"])(1908)["Sketch for Glass," watercolor and ink on paper]. https://collections.library.yale.edu/catalog/2002427.