830 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1957 



emphasis on methods of computing modulation products. Since 1935 he 

 has served as a consultant on mathematical problems and in investiga- 

 tions of the telephone transmission theory, including noise theoiy, and 

 applications of electromagnetic theory. Fellow of the I.R.E. 



J. W. ScHAEFER, B.M.E., Ohio State University, 1941 ; Bell Telephone 

 Laboratories, 1940-. Mr. Schaefer has worked on dial design and dial 

 test equipment, and during the war years contributed to the design and 

 development of anti-aircraft fire control equipment and guided missiles. 

 After the war, Mr. Schaefer proposed a means of steering missiles from 

 which evolved NIKE. He is now working on anti-aircraft guided missile 

 systems. He is a member of A.S.M.E., the Army Ordnance Association, 

 Tau Beta Pi and Sigma Xi. 



Bernard Smith, B.S., City College of New York, 1948; A.M., 1951, 

 and Ph.D., 1954, Columbia University; Lecturer, City College of New 

 York, 1948-1954; Bell Telephone Laboratories, 1954-. In addition to the 

 transmission studies in which he has been engaged since joining the Lab- 

 oratories, his present duties include teaching information theory in the 

 Communications Development Training Program. He is a member of 

 the American Physical Society, Phi Beta Kappa, Sigma Xi and Kappa 

 Delta Pi. 



James L. Smith, B.S., Newark College of Engineering, 1956; Bell 

 Telephone Laboratories, 1941-. Mr. Smith worked on problems con- 

 cerned with relay contact erosion as a technical aide, and in 1956 began 

 his work on solid state switching networks. He is a member of the 

 A.LE.E. and Tau Beta Pi. 



Mark A. Townsend, B.S., Texas Technological College, 1936; M.S., 

 Mass. Institute of Technology, 1937; Bell Telephone Laboratories, 

 1945-. Mr. Townsend's early work with the Laboratories was on the 

 development of gas discharge tubes for use in telephone switching sys- 

 tems. More recently, his work has been in the exploratory development 

 of systems for digital data transmission and of a small electronic switch- 

 ing system. He is a member of the A.I.E.E., and senior member of the 

 I.R.E. 



Gerd F. Weissmann. Dipl.-Ing. Technical University of Berlin, 1950; 

 M.S. Pennsylvania State University, 1953; Bell Telephone Laboratories, 

 1953-. Mr. Weissmann 's work at the Laboratories has been in stress 

 analysis, engineering mechanics, strain measurements, soil mechanics 

 and metals properties and testing. He also has worked with outside 

 plant problems and metallurgical engineering. 



