CONTRIBUTORS TO THIS ISSUE 589 



returned to Southern Bell where he is now Exchange Transmission 

 Engineer. Mr. Howard is a member of the A.I.E.E. 



Marilyn J. Huyett, A.B., Susquehanna University, 1954; Bell Tele- 

 phone Laboratories, 1954-. Since joining the Laboratories, Miss Huyett 

 has been concerned with statistical research for the reliability group at 

 Allentown, where she has had a great deal of experience with IBM com- 

 puting machines. She is a member of the American Statistical Associa- 

 tion. While in college, she received the Stine Mathematical Prize, an 

 award for proficiency in mathematics. 



John E. Karlix, B.A., University of Cape Town, 1938; M.A., Uni- 

 versity of Cape Town, 1939; Ph.D., University of Chicago, 1942; Bell 

 Telephone Laboratories, 1945-. Dr. Karlin was engaged in psycho- 

 acoustic research from 1945 to 1947. From 1947 until the present he has 

 been concerned with user preference research, and since 1952 he has 

 been in charge of the group doing this research. During the war years, 

 1942-1945, Dr. Karlin was at Harvard University, engaged in conmiuni- 

 cations research on military projects. He is a member of the LR.E., the 

 Acoustical Society of America, the American Psychological Association 

 and Sigma Xi. 



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Stuart P. Lloyd, S.B., 1943, University of Chicago; M.S., 1949 and 

 Ph.D., 1951, University of Illinois. Bell Telephone Laboratories, 1952-. 

 Engaged in work relating to probability theory and information theory. 

 Member, Institute for Advanced Study, Princeton, 1951-52. Member of 

 American Mathematical Society, Institute of Mathematical Statistics, 

 American Physical Society, A.A.A.S., Phi Kappa Phi, Sigma Xi and 

 Phi Beta Kappa. 



D. W. jMcCall, B.S., University of Wichita, 1950; M.S., 1951 and 

 Ph.D., 1953, University of Illinois; Bell Telephone Laboratories, 1953-. 

 Dr. McCall is engaged in fundamental studies of the properties of di- 

 electrics. He is a member of the American Chemical Society, the Ameri- 

 can Physical Society, Sigma Xi, and Phi Lambda Upsilon. 



LuDwiG Pedersen, Christiania Technical School (Norway), 1919; 

 Western Electric International Co. (Oslo), 1919-20; Western Electric 

 Co., 1920-25; Western Electric Co., Field Engineering Force, 1944-45; 

 Bell Telephone Laboratories, 1925-. He has been concerned with circuit 

 design for machine switching systems, development of telegraph equip- 



