Cite

[Five still life paintings], watercolor and tempera on paper

MLA

Stieglitz, Alfred, 1864-1946. [Five still life paintings], watercolor and tempera on paper. Box 160, folder 2924. 1910. https://collections.library.yale.edu/catalog/2012106.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 160, folder 2924"])(1910)[[Five still life paintings], watercolor and tempera on paper]. https://collections.library.yale.edu/catalog/2012106.