Contributors to this Issue 



W. R. Bennett, B.S., Oregon State College, 1925; A.M., Columbia 

 University, 1928. Bell Telephone Laboratories, 192S-. Mr. Bennett 

 has been engaged in the study of the electrical transmission problems of 

 communication. 



C. R. Burrows, B.S. in Electrical Engineering, University of 

 Michigan, 1924; A.M., Columbia University, 1927. Western Electric 

 Company, Engineering Department, 1924-25; BellTelephone Labora- 

 tories, Research Department, 1925-. Mr. Burrows has been associ- 

 ated continuously with radio research and chiefly in studies of the 

 propagation of radio 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 chiefly in work 

 relative to radio communication by ultra-short waves. 



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

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

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

 Assistant, LIniversity 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. 



E. B. Ferrell, B.A., 1920; B.S. in Electrical Engineering, 1921; 

 M.A., 1924; Instructor in Mathematics, University of Oklahoma, 1921- 

 24. Bell Telephone Laboratories, 1925-. Mr. Ferrell has been 

 engaged in research in connection with short wave and ultra-short wave 

 transmitters. 



William W. Mumford, B.A., Willamette LIniversity, 1930. Bell 

 Telephone Laboratories, 1930-. Mr. Mumford has been engaged in 

 radio receiving work, chiefly on the problem of propagation and 

 measurement in the ultra-short wave region. 



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