"Many Inventions! 1914"
MLA
Luhan, Mabel Dodge, 1879-1962. "Many Inventions! 1914". Box 90, folder 2259. 1912-14, n.d.. https://collections.library.yale.edu/catalog/10189905.
APA, 6th edition
Luhan, Mabel Dodge, 1879-1962. (["Box 90, folder 2259"])(1912-14, n.d.)["Many Inventions! 1914"]. https://collections.library.yale.edu/catalog/10189905.