Handwritten notes written by Buck in books relating to various artistic subjects and painters. Buck comments on such subjects as shading and gives his opinions on various artists and artistic techniques.

Letters received, articles for publication, news clippings, and miscellaneous items. The materials deal with Buck's career as a painter.

Reviews, sketches, poems, notes, family histories, and magazine articles. The materials relate to Buck's work as an artist. The notes relate to the composition of some of his art work, and the articles and reviews relate to analyses of his art.

The Juel Buck Schiller biography on Claude Buck includes the account entitled "The Artist, Claude Buck" in which his daughter, Juel, portrays his life through the eyes of a loving daughter. Included are press notes, letters, lists of his exhibits, a detailed biography of his life in terms of poverty, poetry and philosophy as well as his poems which are compiled by Juel.