Contributors to This Issue 



A. M. Clogston, Massachusetts Institute of Technology, B.S. in Physics, 

 1938; Ph.D., 1941; from 1941-46 he worked on magnetrons in the Radiation 

 Laboratory at M.I.T. Bell Telephone Laboratories, 1946-. Dr. Clogston is 

 now doing research principally on electron tubes. 



E. N. Gilbert, B.S. in Physics, Queens College, 1943; Massachusetts 

 Institute of Technology Radiation Laboratory, 1944-46; Ph.D. in Mathe- 

 matics, M.I.T., 1948. Bell Telephone Laboratories, 1948-. Dr. Gilbert has 

 been concerned with mathematical problems of switching and communica- 

 tion theory. 



F. K. Harvey, B.E.E., New York University, 1939. Bell Telephone Lab- 

 oratories, 1929-. In the Physical Research and Transmission Research 

 Departments, Mr. Harvey has been chiefly concerned with the investigation 

 and measurement of acoustical devices. 



R. A. Kempf, B.S. in Electrical Engineering, University of Illinois, 1937. 

 Bell Telephone Laboratories, 1937-. Mr. Kempf is in the Outside Plant 

 Development Department and has been with the Toll Cable group located 

 at Point Breeze, Baltimore, Maryland since coming with the Laboratories, 

 except for the period from 1941-45 when he was on active duty in the U. S. 

 Navy. 



Winston E. Kock, B.E., University of Cincinnati, 1932; M.S., 1933; 

 Ph.D., University of Berlin, 1934. Institute for Advanced Study, Princeton, 

 New Jersey, 1935-36. Director of Electronic Research, Baldwin Piano 

 Company, Cincinnati, Ohio, 1936-42. Bell Telephone Laboratories, Research 

 Department, 1942- . Dr. Kock was engaged in radar antenna work in the 

 Radio Research Department during the war. He is now engaged in micro- 

 wave and acoustic research. 



C. O. Mallinckrodt, Washington University, B.S. in E.E., 1930. Bell 

 Telephone Laboratories, 1930- April 1951. Mr. Mallinckrodt engaged in the 

 development of carrier telephone repeaters and transmission regulators. 

 During the war he worked on pulse modulation telephone systems which led 

 to the development of the theory of instantaneous compandors. 



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