ALTERNATING CURRENT PRINCIPLES. De Forest's Training, Inc., c1948. 100 ft., b&w, 16mm. (Radio Electronics, reel lesson 6)

Summary: Explains the principles of alternating current—how alternating current is developed, what its operating characteristics are, and how the a-c transformer works.

© De Forest's Training, Inc,; 1Oct48; MP3899.

ALUMINUM. Eastman Kodak Co., c1941. 1 reel.

Appl. author: Marjorie F. Ellis.

© Eastman Kodak Co.; 11Sep41; MP11989.

ALVINO REY AND HIS ORCHESTRA. Universal Pictures Co., Inc., c1948. 15 min., sd., b&w, 35mm.

Summary: A musical short.

Credits: Producer and director, Will Cowan; film editor, Otto Ludwig.

© Universal Pictures Co., Inc.; 23Mar48 (in notice: 1947); MP2874.