1516 THE BELL SYSTEM TECHNICAL JOURNAL NOVEMBER, 1953 



association Mr. Depp was concerned with thoriated tungsten and tan- 

 talum emitters and later with cold cathode tubes. During World War II 

 he worked on pulsing thyratrons and fixed spark gap tubes for radar, 

 and miniature thy rations used in the proximity fuse. He was subse- 

 quently in charge of the basic development of all types of gas-filled 

 tubes. Recently he transferred to Transmission Systems Development 

 with responsibility for broad band carrier terminal equipment, N and 

 carrier systems and automatic switching for the L3 coaxial cable system. 

 Member of the A.I.E.E., Eta Kappa Nu, Tau Beta Pi, Phi Kappa Phi 

 and Sigma Xi. Senior member of the I.R.E. 



James M. Early, B.S. cum laude, New York State College Of Forestry, 

 1943; M.S. and Ph.D. Ohio State University, 1948 and 1951. Bell Tele- 

 phone Laboratories 1951-. After teaching Electrical Engineering at 

 Ohio State University for five years while studying for his Master's and 

 Ph.D. degrees, Dr. Early joined an electronic apparatus development 

 group, participating in the development of the junction transistor. At 

 present he is doing theoretical as well as development work on high fre- 

 quency junction transistors. Member of the I.R.E. and Eta Kappa Nu. 

 Associate of Sigma Xi. 



Joseph Gramels, B.S. in E.E., New York University, 1936. Bell 

 Telephone Laboratories 1925-. Mr. Gramels was first occupied with 

 testing and development work in transmission, including handsets, 

 recording apparatus and 33 rpm records. In 1937 and 1938 he woiked on 

 electrolytic condensers and silicon carbide varistors. Since 1938 he has 

 been concerned with investigations of selenium rectifier cells both for 

 Bell System applications and for military use. Member of the A.LE.E. 



Mason A. Logan, B.S. in Physics and Engineering, California Insti- 

 tute of Technology, 1927; M.A. in Physics, Columbia University, 1933- 

 Carnegie Institute of California, Seismological Laboratory, 1926-1927- 

 Bell Telephone Laboratories, 1927-. His early Laboratories' projects were 

 concerned with wire transmission problems particularly those of losses, 

 noise and cross induction in local, manual and dial telephone circuits. This 

 was followed by circuit research on alternating current methods of signal- 

 ing including the use of non-linear elements and electronic terminal equip- 

 ment. From 1941 to 1948 he worked on military projects, including a 

 mine fire control system, anti-aircraft gun director, magnetic proxim- 

 ity fuses, and guided missiles. For the past five years he has been a 



