166 BELL SYSTEM TECHNICAL JOURNAL 



to wood presentation. During the war period he was active in the protec- 

 tion of electrical equipments against moisture and fungi attack when used 

 in the tropics. 



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 communica- 

 tion. 



A, L. Samuel, A.B., College of Emporia (Kansas), 1923; S.B. and S.M. 

 in Electrical Engineering, Massachusetts Institute of Technology, 1926. 

 Additional graduate work at M. I. T. and at Columbia University. In- 

 structor in Electrical Engineering, M. I. T., 1926-28. Mr. Samuel joined 

 the Technical Staff of the Bell Telephone Laboratories in 1928, where he 

 has been engaged in electronic research and development. Since 1931, 

 his principal interest has been in the development of vacuum tubes for use 

 at ultra-high frequencies. 



William C. Tintjs, B.S. in Electrical Engineering, Texas A. & M. College, 

 1928. Bell Telephone Laboratories, 1928-. For ten years Mr. Tinus was 

 engaged in the development of radio communication apparatus, principally 

 for mobile use. In 1938 he organized and directed the first radar develop- 

 ment work in the Laboratories. As Radio Development Engineer he is 

 now responsible for a number of radar and related electronic development 

 projects for the Army and Navy. 



