LETTER TO <SANITIZED> FROM ROBERT L. WATERS RE DATA DISCUSSED WITH FRED

Approved for Release: 2021/01/13 C05752613 / �RD 19 December 1966 Gentlemen: The enclosed sheets are the recordings that represent most of the data you and Fred discussed. The surface pass occurred at a time when the equipment was malfunctioning; therefore, no record worth sending. We are especially interested in the aspects of data analysis suggested by the filtered fundamental-and-harmonic records shown on one of the sheets...