MLA

Edwards, Jonathan, 1703-1758. ALS. Box 22, folder 1279. n.d.. https://collections.library.yale.edu/catalog/10900907.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 22, folder 1279"])(n.d.)[ALS]. https://collections.library.yale.edu/catalog/10900907.