1867 September - 1868 August
MLA
Whitney, William Dwight, 1827-1894. 1867 September - 1868 August. Box 13. 1867 September - 1868 August. https://collections.library.yale.edu/catalog/32522517.
APA, 6th edition
Whitney, William Dwight, 1827-1894. (["Box 13"])(1867 September - 1868 August)[1867 September - 1868 August]. https://collections.library.yale.edu/catalog/32522517.