Lt. (j.g.) Seldon levin, USNR, was assigned to the Scripps Institution of Oceanography during the summer of 1944 to take a course in sea, well, and surf forcasting methods taught by Harald U. Sverdrup and Walter H. Munk. Levin's notebook includes mimeographed class handouts, notes on lectures, and detailed descriptions of sea, swell, and surf forcasting techniqes. Military meteorologists used these techniques to predict surf conditions for allied landings in Europe, North Africa, and the Pacific during World War II.