1. HIGH DRAFTING AND THE AMBLER SUPER-DRAFT SYSTEM
2. Anon., Super High Draft Ring Spinning Frame , O-M Spinning Machine Manufacturing Co., Ltd., Osaka, Japan, n. d. 17 pp. (1953).
3. Anon. "High Drafting of Cotton," The Textile Recorder Year Book, Harlequin Press, Manchester, Eng., p. A86 (1940).
4. A REVIEW OF THE DEVELOPMENT OF COTTON SPINNING MACHINERY