G. Schirmer, Inc.
MLA
Johnson, James Weldon, 1871-1938. G. Schirmer, Inc.. Box 17, folder 426. 1914-16. https://collections.library.yale.edu/catalog/9998652.
APA, 6th edition
Johnson, James Weldon, 1871-1938. (["Box 17, folder 426"])(1914-16)[G. Schirmer, Inc.]. https://collections.library.yale.edu/catalog/9998652.