Contains several composition books belonging to Kane as well as four blank postcards and a loose page of notes found in the composition books. The composition books are used for educational purposes, and contain primarily unsent letters from Kane to her mother and others. Later volumes also contain French and Spanish notes, as well as medical notes. The loose page of notes contains a list of alphabetized words, and the postcards depict wolves. Materials date from 1870 to 1882.

Contains materials related to the life and activities of Kane. These consist primarily of a series of composition books and two letters. The composition books contain mostly letters written by Harriet to her mother, father, and others, but later volumes include medical notes. The letters concern family matters, and a purchase made by a friend on Harriet's behalf. Materials date between 1870 and 1891.