MLA

Edwards, Jonathan, 1703-1758. 10. 1711 Aug 3. Edwards, Timothy. ALS to Mrs. Esther Edwards. 1 1/2 leaves.. Box 3, folder 80. 1711 August 3. https://collections.library.yale.edu/catalog/33305572.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 3, folder 80"])(1711 August 3)[10. 1711 Aug 3. Edwards, Timothy. ALS to Mrs. Esther Edwards. 1 1/2 leaves.]. https://collections.library.yale.edu/catalog/33305572.