Fade Parallel System and the Close in Procedure. © 26Apr45; MP15921.

The 90 Degree System. © 26Apr45; MP15922.

The True Fade System. © 26Apr45; MP15923.

INSTRUMENT FLIGHT CONTROL; radio Navigation. Ray-Bell Films, Inc., c1945. 1 reel, sd., 16mm. © Ray-Bell Films, Inc.

Appl. author: R. H. Ray.

2. Bracketing an Unknown Beam. ©26Apr45; MP15924.

INTERMEDIATE TUMBLING. Coronet, c1945. 1 reel, sd., b&w, 16mm.

Credits: Educational author, Karl W. Bookwalter.

© Esquire, Inc.; 22Dec45; MP1526.

INTERNATIONAL FORUM; the round table of the screen. Columbia Pictures Corp., c1941. 2 reels each, sd. A William Rowland production. © Columbia Pictures Corp.