CONTRIBUTORS TO THIS ISSUE 777 



Reserve, he joined the Naval Ordnance Laboratory at White Oak, 

 Maryland. Here he conducted research on torpedo motion and control 

 theory. He joined Bell Telephone Laboratories in 1949, and has con- 

 ducted mathematical research on non-linear partial differential equa- 

 tions and served as a consultant on military projects. Dr. Prim is a 

 member of the American Mathematical Society, the American Physical 

 Society, Sigma Xi, and Tau Beta Pi. 



E. D. Reed, B.Sc, University of London, 1941; M.S., Columbia 

 University, 1947. Ardente, Ltd., 1941-43; U. S. Army, 1944-46; Bell 

 Telephone Laboratories, 1947- Mr. Reed is engaged in the development 

 and design of klystrons. Associate member of the Institute of Radio 

 Engineers and member of Sigma Xi. 



Harry Suhl, B.Sc, University of Wales, 1943; Ph. D., Oriel College, 

 University of Oxford, 1948. Admiralty Signal Establishment, 1943-46; 

 Bell Telelphone Laboratories, 1948-. Dr. Suhl conducted research on 

 the properties of germanium until 1950, when he became concerned 

 with electron dynamics and solid state physics research. Member of the 

 American Institute of Physics and the American Physical Society. 



R. H. Van Horn, B.S. in E.E., Pennsylvania State College, 1937; 

 M.A., Columbia University, 1947. Bell Telephone Laboratories, 1937-. 

 Mr. Van Horn is a member of the Switching Apparatus Development 

 Department and is in charge of the machine switching apparatus labo- 

 ratory. He has previously been engaged in the development of under- 

 water sound devices and the vibrating reed selector for mobile radio 

 applications. Member of A.I.E.E. and Acoustical Society of America. 



E. F. Vaage, E.E., Technical University of Darmstadt, 1926; M.E.E., 

 Brooklyn Polytechnic Institute, 1932; Royal Norwegian Air Force, 

 1918-19; Elektrisk Bureau, 1926-27; A. T. & T. Co., 1927-34; Bell 

 Telephone Laboratories, 1934-. Mr. Vaage is a member of a group en- 

 gaged in systems studies, an outgrowth of his previous work of evaluating 

 transmission systems. Member of American Mathematical Society and 

 A.I.E.E. 



A. S. WiNDELER, B.S., Rutgers University, 1930; Bell Telephone 

 Laboratories, 1930-. Mr. Windeler has been engaged in the design and 

 development of toll cable, including coaxial, video pair, and microwave, 

 types. He is currently in charge of a group concerned with the develop- 

 ment of expanded polyethylene insulated conductors for multipair cable. 



