Contributors to this Issue 



J. A. Becker, A.B., Cornell University, 1918. Bureau of Standards, 

 1918; Westinghouse Electric and Manufacturing Company, 1919; 

 Western Electric Company, 1919. Ph.D., Cornell University, 1922; 

 National Research Fellow, California Institute of Technology, 1922- 

 24; Assistant Professor, Stanford University, 1924. Western Electric 

 Company, 1924-25; Bell Telephone Laboratories, 1925-. Since 1924 

 Mr. Becker has been engaged in research work on thermionics, oxide 

 coated filaments, semi-conductors, varistors, and copper oxide 

 rectifiers. 



Charles R. Burrows, B.S. in Electrical Engineering, University 

 of Michigan, 1924; A.M., Columbia University, 1927; E.E., Univer- 

 sity of Michigan, 1935. Research Assistant, University of Michigan, 

 1922-23. Western Electric Company, Engineering Department, 1924- 

 25; Bell Telephone Laboratories, Research Department, 1925-. Mr. 

 Burrows has been associated continuously with radio research and is 

 now in charge of a groijp investigating the propagation of ultra-short 

 waves. 



Arthur B. Crawford, B.S. in Electrical Engineering, Ohio State 

 University, 1928. Member of Technical Staff, Bell Telephone 

 Laboratories, 1928-. Mr. Crawford has been engaged chiefiy in work 

 relative to radio communication by ultra-short waves. 



Carl R. Englund, B.S. in Chemical Engineering, University of 

 South Dakota, 1909; University of Chicago, 1910-12; Professor of 

 Physics and Geology, Western Maryland College, 1912-13; Laboratory 

 Assistant, University of Michigan, 1913-14. Western Electric Com- 

 pany, 1914-25; Bell Telephone Laboratories, 1925- As Radio 

 Research Engineer Mr. Englund is engaged largely in experimental 

 work in radio communication. 



Ray S. Hoyt, B.S. in Electrical Engineering, University of Wiscon- 

 sin, 1905; Massachusetts Institute of Technology, 1906; M.S., Prince- 

 ton, 1910. American Telephone and Telegraph Company, Engineer- 

 ing Department, 1906-07. Western Electric Company, Engineering 

 Department, 1907-11. American Telephone and Telegraph Com- 

 pany, Engineering Department, 1911-19; Department of Develop- 



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