MLA

Stieglitz, Alfred, 1864-1946. Family Group (Lake George). Box 132. [1888]. https://collections.library.yale.edu/catalog/2002579.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 132"])([1888])[Family Group (Lake George)]. https://collections.library.yale.edu/catalog/2002579.