CONTRIBUTORS TO THIS ISSUE 1207 



iinpedaiice repeaters for the improvemont of (exchange transmission. He 

 holds several patents and is the author of imnu'rous Icchnical ai'ticlcs. 

 Member of Theta Alpha I'hi. 



Irad S. Rafuse, B.S. in E.E., Cooper Union, 1927; Columbia TTni- 

 versity; Western Electric Company, 1920-1925; Bell Telephone Labo- 

 ratories, 1925-. He worked on the development of high quality vertical 

 disc recording for a number of years before luining to measurements 

 and testing of switching apparatus. During World War II he engaged 

 in th(> development of sonar equipment in cooperation with the N.D.R.C. 

 aiul the Bureaus of Ships and Ordnance from which he received a com- 

 mendation for his work. He was later in charge of a group engaged in 

 the development of a new wire-spring, multi-contact relay and now is 

 in charge of a group developing glass sealed switches. 



Arthur F. Rose, B.S. in E.E., Colorado College, 1914; American 

 Telephone and Telegraph Companj^, 1914-. Mr. Rose immediately 

 joined the General Engineering Department of the A.T.&T. Co. Upon 

 completing the student training course for new employees, he was 

 assigned to the development work then under way on the New York- 

 San Francisco route which culminated in the first transcontinental tele- 

 l)hone service in 1915. As a result of this initial acquaintance with tele- 

 phone repeaters, he continued in transmission work dealing particularly 

 w ith these devices. In 1919, when the General Engineering Department 

 was divided and the Operating and Engineering Department formed, 

 Mr. Rose was assigned to the group that was concerned primarily Avith 

 the application of repeaters and carrier systems in toll engineering. In 

 1939 he was transferred to the Plant Extension Section and in 1953 re- 

 turned to the Transmission Section as Exchange Transmission Engineer. 



J. 0. Smethurst, B.S. in Communications, Tufts College, 1929; Bell 

 Laboratories, 1929-. For many years he was concerned with overseas 

 telephony, concentrating especiall.y on control terminals for radio tele- 

 phone circuits. During World War II he was associated with various 

 government projects and after the war he worked on NIKE. Since 1953 

 he has concentrated on E2 and E3 repeaters. 



Harry Suhl, B.Sc, University of Wales, 1943; Ph.D., Oriel College, 

 University of Oxford, 1948. Admiralty Signal Establishment, 1943-46; 

 Bell Telephone Laboratories, 1948-. Dr. Suhl conducted research on the 

 properties of germanium until 1950 when he became concerned with 



