Correspondence
MLA
Henri, Robert, 1865-1929. Correspondence. Box 9, folder 227. 1891. https://collections.library.yale.edu/catalog/17029574.
APA, 6th edition
Henri, Robert, 1865-1929. (["Box 9, folder 227"])(1891)[Correspondence]. https://collections.library.yale.edu/catalog/17029574.