CONTRIBUTORS TO THIS ISSUE 393 



A. L. Whitman, Harvard University, A.B., 1918; B.S. in Electrical 

 Engineering, 1920. Harvard University Sheldon Fellowship for 

 traveling study in Europe, 1920-21. American Telephone and 

 Telegraph Company, Department of Development and Research, 

 Inductive Interference and Noise Prevention Group, 1921-34. Mem- 

 ber of Technical Staff, Transmission Development Department of Bell 

 Telephone Laboratories, 1934-. Mr. Whitman is now engaged in 

 field studies of noise and crosstalk as related to carrier-telephone 

 transmission systems utilizing a broad band of frequencies. 



