The books, some of which contain loose sheets, include notes and worked problems from his Cambridge studies in the 1850s; Senate House and other examination problems, 1861-65; draft essay for Adams Prize, 1869; commentaries on mathematical books and papers; investigations into elliptic functions, spherical functions, Gauss's series and quaternions, ca.1870-1910. They also include some elementary work by his daughters, Maud and Geraldine, in the 1880s.