Background material for the Thorne, Misner, Wheeler book, "Gravitation". These include two drafts of the book (the second draft contains Wheeler's original drawings for illustrations that appear in the book), and a mimeographed preliminary edition. Other material includes several folders of class handouts prepared by Misner in 1966, 1968-1969 and some course handouts from Kip Thorne and John Wheeler, a folder of correspondence, and notes. These are Misner's files primarily from the late 1960s, and it appears that most of the material was either generated by him (e.g., most of the course handouts) or are his copies of joint work. However it includes some Thorne and Wheeler material.