MLA

Schieffelin, Jacob, 1793-1880. Correspondence. Box 4, folder 57. 1860-63. https://collections.library.yale.edu/catalog/16706050.

APA, 6th edition

Schieffelin, Jacob, 1793-1880. (["Box 4, folder 57"])(1860-63)[Correspondence]. https://collections.library.yale.edu/catalog/16706050.