214 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1952 



U.S. Navy, Airborne Radar Maintenance, 1944-46; Bell Telephone Labo- 

 ratories, 1949-. Dr. Jakes has been engaged in microwave antenna and 

 propagation studies. Member of I.R.E., Sigma Xi, Pi Mu Epsilon, and 

 Eta Kappa Nu. 



W. P. Mason, B.S. m E.E., University of Kansas, 1921; M.A., Ph.D., 

 Columbia, 1928. Bell Telephone Laboratories, 1921-. Dr. Mason has 

 been engaged principally in investigating the properties and applications 

 of piezoelectric crystals, in the study of ultrasonics, and in mechanics. 

 Fellow of the American Physical Society, Acoustical Society of America 

 and Institute of Radio Engineers and member of Sigma Xi and Tau 

 Beta Pi. 



H. J. McSkimin, B.S., University of Illinois, 1937; M.S., New York 

 University, 1940. Bell Telephone Laboratories, 1937-. Here he has worked 

 chiefly on crystal filters, piezoelectric elements, ADP crystals, studies 

 of the acoustic properties of liquids and solids. Fellow of Acoustical 

 Society of America and Member of Eta Kappa Nu and Sigma Xi. 



R. S. Ohl, B.S. in Electro-Chemical Engineering, Pennsylvania State 

 College, 1918; U. S. Army, 1918 (2nd Lieutenant, Signal Corps); Vacuum 

 tube development, Westinghouse Lamp Company, 1919-21; Instructor 

 in Physics, University of Colorado, 1921-22. Department of Develop- 

 ment and Research, American Telephone and Telegraph Company, 1922- 

 27; Bell Telephone Laboratories, 1927-. Mr. Ohl has been engaged in 

 various exploratory phases of radio research, the results of which have 

 led to numerous patents. For the past ten or more years he has been 

 working on some of the problems encountered in the use of millimeter 

 radio waves. Member of American Physical Society and Alpha Chi Sigma 

 and Senior Member of the I.R.E. 



E. E. Sumner, B.M.E., Cooper Union, 1948, holding Schweinburg 

 Scholarship throughout entire college curriculum; Instructor of Physics, 

 Cooper Union, 1947-48; Non-resident instructor of Massachusetts 

 Institute of Technology, Probahility and Statistics — Applications to 

 Sampling and Quality Control, summer, 1950; Bell Telephone Labora- 

 tories, 1948-. Mr. Sumner was given rotational assignments in apparatus, 

 switching, and television transmission development and switching re- 

 search, and has worked on a number of projects, including the card 

 translator, the magnetic drum, the video transmission evaluator, and 

 the vibrating reed selector. He is currently engaged in the development 

 of wire-spring relay. Member of Tau Beta Pi and Pi Tau Sigma. 



