MLA

Schletter, Annie, 1858-1944. Windsor Castle theatrical performance program, menu, and admission card for Annie Schletter. Box 2, folder 83. 1914 Feb 2. https://collections.library.yale.edu/catalog/17453754.

APA, 6th edition

Schletter, Annie, 1858-1944. (["Box 2, folder 83"])(1914 Feb 2)[Windsor Castle theatrical performance program, menu, and admission card for Annie Schletter]. https://collections.library.yale.edu/catalog/17453754.