CONTRIBUTORS TO THIS ISSUE 821 



Erniost R. Kretzmer, B.S., Wor(;ostcr Polytecluiic Institute, 1944; 

 M.S., Massachusetts Institute of Technology, 1946; Sc.D., Massachu- 

 setts Institute of Technology, 1949. As a member of the Electrical En- 

 gineering Department at Massachusetts Institute of Technology, Dr. 

 Kretzmer taught from 1944-46 and conducted research there from 

 1946-49. Bell Telephone Lal)oratories, 1949-. He works in the tele\'ison 

 research group, where he has been principally concerned with decor- 

 relation of television signals. Member of I.R.E. and Sigma Xi. 



L. R. Montfort, E.E., University of Mrginia, 1926; American Tele- 

 l^hone and Telegraph Company 1926-34; Bell Telephone Laboratories, 

 1934-. Mr. Montfort has been concerned with the engineering of carrier 

 systems. This has included field work with new systems and field tests 

 prior to the design of new systems. During the end of World War II 

 and for a shoi't time thereafter, he assisted in the engineering and test- 

 ing of microwave radio systems. Member of A.I.E.E., Tau Beta Pi, 

 Theta Tau, and Sigma Phi Epsilon. 



Russell S. Ohl, B.S. in Electro-Chemical Engineering, Pennsylvania 

 State College, 1918; U. S. Army, 1918 (2nd Lieutenant, Signal Corps); 

 Vacuum tube development, Westinghouse Lamp Company, 1919-21; 

 Instructor in Physics, University of Colorado, 1921-1922. Department of 

 Development and Research, American Telephone and Telegraph Com- 

 pany, 1922-27; Bell Telephone Laboratories, 1927-. Mr. Ohl has been 

 engaged in various exploratory phases of radio research, the results of 

 wliich have led to numerous patents. For the past ten or more years he 

 has l)een working on some of the problems encountered in the use of 

 millimeter radio waves. Member of American Physical Society and Alpha 

 Chi Sigma and Senior Member of the I.R.E. 



B. ]\I. Oliver, B.A., Stanford University, 1935; M.S., California 

 Institute of Technology, 1936; Ph.D., California Institute of Technology, 

 1939. Bell Telephone Laboratories, 1939-52. During World War II, 

 Dr. Ohver was engaged in radar research and the rest of his employ- 

 ment before leaving the laboratories was in the television research group. 

 Member of I.R.E. and Phi Beta Kappa. 



Wilton T. Rea, B.S., Princeton University, 1926; American Tele- 

 phone and Telegraph Company, 1926-34; Bell Telephone Laboratories, 

 1934-. Except for the years 1941-45, when he worked on military pro- 

 jects. Mr. Rea has been principally concerned ^^^th telegraphy. As Tele- 



