Contributors to this Issue 



A. B. Clark, B.E.E., University of Michigan, 1911. A. T. & T. Co., 

 1911-34; Bell Telephone Laboratories, 1934-. Toll Transmission De- 

 velopment Engineer, 1929; Toll Transmission Development Director, 

 1934; Director of Transmission Development, 1935; Director of Systems 

 Development, 1940; Vice President, 1944. Bell System Chairman of 

 Joint Subcommittee on Development and Research of the Edison Elec- 

 tric Institute and Bell System since 1938. Since June, 1951, Mr. Clark 

 has been in charge of coordinating all Bell System programs at the 

 Laboratories. During World War II he served both as a consultant to 

 and a member of various divisions of the Office of Scientific Research 

 and Development. In 1944 he was appointed Consultant to the Secretary 

 of War, and in connection with this work made trips to the European 

 and Mediterranean theaters of operation. Member of I.R.E., Tau Beta 

 Pi, Sigma Xi, and A.A.A.S. and Fellow of A.I.E.E. and the Acoustical 

 Society of America. 



J. R. Fry, M.E., Cornell University, 1915. Western Electric Company, 

 1915-25. Bell Telephone Laboratories 1925-. Mr. Fry has been Assistant 

 Switching Apparatus Engineer in the Switching Apparatus Development 

 Department since 1946. Except for the years 1941-45, when he worked 

 on military projects, most of Mr. Fry's Bell System service has been 

 devoted to the design and development of electromagnetically operated 

 switching apparatus such as relays, switches, registers, and selectors. 

 Member of Eta Kappa Nu. 



H. C. Montgomery, A.B., University of Southern Cahfornia, 1929; 

 M.A., Columbia University, 1933. Bell Telephone Laboratories, 1929- 

 Prior to the war, Mr. Montgomery was engaged in studies of hearing 

 acuity and the analysis of speech sounds. His recent work in the transis- 

 tor physics group has been concerned with fluctuation phenomena in 

 semiconductors. 



Samuel P. Morgan, Jr., B.S., California Institute of Technology, 

 1943; M.S., California Institute of Technology, 1944; Ph.D., California 

 Institute of Technology, 1947. Bell Telephone Laboratories, 1947-. A 



1020 



