Letters
MLA
Twichell, Joseph Hopkins, 1838-1918. Letters. Box 5. 1861-1864. https://collections.library.yale.edu/catalog/2011872.
APA, 6th edition
Twichell, Joseph Hopkins, 1838-1918. (["Box 5"])(1861-1864)[Letters]. https://collections.library.yale.edu/catalog/2011872.