CONTRIBUTOES TO THIS ISSUE 1235 



University Press, 1954). Senior Scholar of Trinity College, Cambridge, 

 1945. Twisden Student of Trinity College, 1949. Fellow of Physical 

 Society (London). Member of American Physical Society. 



L. D. Hansen, B.S., Montana State College, 1924; Western Electric 

 Company, 1924-. Mr. Hansen joined the Equipment Engineering Or- 

 'ganization at the Hawthorne Plant of The Western Electric Company 

 in Chicago in 1924 where he was engaged in preparation of telephone 

 central office specifications. He transferred to the Kearny, N. J., Plant 

 in 1928 where he was promoted to section chief in 1929. He transferred 

 to the Engineer of Manufacture Organization in 1930 and worked on 

 carrier and repeater test development and methods until 1941 when he 

 was promoted to Department Chief in charge of wired switching ap- 

 paratus and equipment test set development and methods. 



William C. Jakes, Jr., B.S.E.E., Northwestern University, 1944; 

 M.S., Northwestern, 1947; Ph.D., Northwestern, 1948. Bell Telephone 

 Laboratories, 1949-. Dr. Jakes is engaged in microwave antenna and 

 propagation studies and holds a patent in microwave antennas. He is 

 the author of chapter in antenna engineering handbook (McGraw-Hill). 

 Member of Sigma Xi, Pi Mu Epsilon, Eta Kappa Nu, LR.E. and Phi 

 Delta Theta. 



Amos E. Joel, Jr., B.S., Massachusetts Institute of Technology, 1940; 

 M.S., M.I.T., 1942; Bell Telephone Laboratories, 1940-. Mr. Joel is 

 Switching Systems Development Engineer responsible for coordinating 

 the exploratory development of a trial electronic switching system. 

 Prior to his present position he worked on relay engineering, crossbar 

 test laboratory, fundamental development studies, circuits for relay com- 

 puters, preparation of a text and teaching switching design, designing 

 j AMA computer circuits and making fundamental engineering studies 

 on new switching systems. He holds some forty patents. Member of 

 A.I.E.E., LR.E., Sigma Xi and Association for Computing Machinery. 



Archie P. King, B.S., California Listitute of Technology, 1927. After 

 three years with the Seismological Laboratory of the Carnegie Institu- 

 tion of Washington, Mr. King joined Bell Telephone Laboratories in 

 1930. Since then he has been engaged in ultra-high-frequency radio re- 

 search at the Holmdel Laboratory, particularly with waveguides. For the 

 I last ten years Mr. King has concentrated his efforts on waveguide trans- 

 mission and waveguide transducers and components for low-loss circular 



