Contributors to this Issue 



Clifford E. Fay, B.S. in Electrical Engineering, Washington University, 

 1925; M.S., 1927. Bell Telephone Laboratories, 1927-. Mr. Fay has been 

 engaged principally in the development of power vacuum tubes for radio 

 purposes. 



Laurence W. Morrison, B.S. in Electrical Engineering, University of 

 Wisconsin, 1930. Graduate work, 1930-31. Bell Telephone Laboratories, 

 1931-. Mr. Morrison was engaged in the development of telephone and 

 television terminal equipment for the coaxial system to 1941. Dunag the 

 past war he was concerned with the development of various radar sys^ms as 

 project engineer. Since 1945 he has been in charge of a group concerned 

 with the development of television transmission over wire facilities. 



G. E. Mueller, B.S., Missouri School of Mines and Metallurgy-, 1939; 

 M.S., Purdue University, 1940. Bell Telephone Laboratories, 1940-46. 

 Mr. Mueller was engaged in television and radio research. During the war 

 he worked on radar antenna development. Mr. Mueller is now Assistant 

 Professor of Electrical Engineering at the Ohio State University. 



Sloan D. Robertson, B.E.E., University of Dayton, 1936; M.Sc, Ohio 

 State L^niversity, 1938; Ph.D., 1941, Instructor of Electrical Engineering, 

 University of Dayton, 1940. Bell Telephone Laboratories, 1940-. Dr. 

 Robertson was engaged in microwave radar work in the Radio Research 

 Department during the war. He is now engaged in fundamental microwave 

 radio research. 



D. E. Thomas, B.S. in Electrical Engineering, Pennsylvania State College, 

 1929; M.A., Columbia University, 1932. Bell Telephone Laboratories, 

 1929-. On Military leave from 1942-46 with U. S. Army Signal Corps and 

 U. S. Army Air Forces. Mr. Thomas has been engaged in investigations of 

 submarine telephone cable systems. 



W. A. Tyrrell, B.S., Yale University, 1935; Ph.D., 1939. Bell Tele- 

 phone Laboratories, 1939-. Dr. Tyrrell has been engaged in waveguide 

 research, principally in the field of microwave loss measurements. During 

 the war he developed a number of waveguide components for Navy radar. 



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