Contributors to this Issue 



J. T. MuLLER, Technical College, Amsterdam, Holland, 1923; M.S., 

 Stevens Institute of Technology, 1943. Mr. MuUer came originally to the 

 United States to continue his studies in 1923, became interested in the design 

 and development of high-speed automatic equipment for a number of com- 

 panies and joined Western Electric in 1941 and the Bell Telephone Labora- 

 tories in 1943. He has been primarily concerned with the protection of 

 radar equipment against shock and vibration and the development of new 

 types of shock mounts. His interest is in the field of experimental and 

 mathematical dynamics. 



William W. Mumford, B.A., Willamette University, 1930. Bell Tele- 

 phone Laboratories, 1930-. Mr. Mumford has been engaged in work that 

 is chiefly concerned with ultra-short-wave and microwave radio commu- 

 nication. 



Liss C. Peterson, Chahners Technical University, Gothenburg, 1921 ; 

 Technical Universities of Charlottenburg and Dresden, 1921-23. American 

 Telephone and Telegraph Company, 1925-30; Bell Telephone Laboratories, 

 1930-. Mr. Peterson has recently been concerned with the theory of 

 hearing. 



J. R. Pierce, B.S. in Electrical Engineering, California Institute of Tech- 

 nology, 1933 ; Ph.D., 1936. Bell Telephone Laboratories, 1936-. Engaged 

 in study of vacuum tubes. 



Claude E. Shannon, B.S. in Electrical Engineering, University of Mich- 

 igan, 1936; S.M. in Electrical Engineering and Ph.D. in Mathematics, 

 M. I. T., 1940. National Research Fellow, 1940. Bell Telephone Labora- 

 tories, 1941-. Dr. Shannon has been engaged in mathematical research 

 principally in the use of Boolean Algebra in switching, the theory of com- 

 munication, and cryptography. 



M. K. ZiNN, B.S. in Electrical Engineering, Purdue University, 1918; 

 U. S. Army Signal Corps and Air Service, 1918-19. American Telephone 

 and Telegraph Company, Department of Development and Research, 1919- 

 34; Bell Telephone Laboratories, 1934r-. Mr. Zinn's work has been con- 

 cerned mainly with transmission engineering problems. 



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