988 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1956 



A. J. Pascarella, E.E., Columbia University, 1916. After his gradu- 

 ation he entered the student course of the General Electric Company at 

 Schenectad3^ Shortly after our entrance into World War I, Mr. Pasca- 

 rella joined the U. S. Navy and was put in charge of the electrical labora- 

 tory of the Gas Engine School at Columbia. In 1921 he joined the 

 Western Electric Company and in 1925 the Technical Staff of the Labo- 

 ratories. Here with the Systems Department he was concerned with the 

 development of toll testboards, toll signaling, telegraph, carrier and 

 miscellaneous testing equipment. Later his work consisted of formu- 

 lating maintenance requirements for the over-all testing of toll lines 

 and the detecting and location of faults on toll cables. During World 

 War II he was concerned with developing high level auditory systems 

 for use in psychological warfare. He also acted as editor of repair manuals 

 used by the Armed Services. At the present time he is working on mili- 

 tary projects. Licensed Professional Engineer, New York State. 



L. G. ScHiMPF, B.E.E., Ohio State University, 1937; Bell Telephone 

 Laboratories, 1937-. From 1937 to 1940 Mr. Schimpf was engaged in re- 

 search on the application of electronic devices to switching functions, 

 with particular emphasis on cold cathode tubes. With the outbreak of 

 World War II, he turned his attention to research and development work 

 on military projects. For six years after the war he specialized in trans- 

 mission research studies of local subscriber station circuits and acoustics. 

 Since 1952 he has been engaged in transistor circuit research. In this field 

 he has concentrated particularly on the high frequency operation of 

 transistors in transmission circuits. Senior Member of I.R.E., member 

 of Acoustical Society of America, Eta Kappa Nu, and Tau Beta Pi. 



H. F. Shoffstall, B.E.E., Ohio State University, 1916; American 

 Telephone and Telegraph Company, 1916-35; Bell Telephone Labora- 

 tories, 1935-. Mr. Shoffstall worked on the development of telephone re- 

 peaters and on toll equipment for central offices until he came to the 

 Laboratories in 1935. Since then he has been associated with the switch- 

 ing development group engaged in the design of toll-switching circuits. 

 Member of the American Institute of Electrical Engineers. 



Harold Seidel, B.E.E., College of the City of New York, 1943; 

 M.E.E., D.E.E., Polytechnic Institute of Brooklyn, 1947 and 1954. Dr. 

 Seidel joined Bell Telephone Laboratories in 1953 after employment with 

 the Microwave Research Institute of the Polytechnic Institute of Brook- 

 lyn, the Arma Corporation and the Federal Telecommunications Labora- 



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