CONTRIBUTORS TO THIS ISSUE 405 



Charles W. Carter, Jr., A.B., Harvard, 1920;B.Sc., Oxford, 1923; 

 American Telephone and Telegraph Company, Department of Devel- 

 opment and Research, 1923- Mr. Carter's work has had to do with 

 the theory of electrical networks and with problems of telephone 

 quality. 



Walter Koenig, Jr., A.B., Harvard, 1923; Instructor and Re- 

 search Assistant, Harvard, 1923-24; American Telephone and Tele- 

 graph Company, Department of Development and Research, 1924-. 

 Mr. Koenig has been engaged chiefly in studies relating to trans- 

 mission quality. 



W. A. MacNair, B.Sc, Colgate Univ., 1920; Ph.D., Johns Hopkins 

 Univ. 1925; National Research Fellow in Physics, 1925-27; Bell 

 Telephone Laboratories, 1929-. 



W. P. Mason, B.S., University of Kansas, 1921; M.A., Columbia, 

 1924; Ph.D., Columbia, 1928. Engineering Department, Western 

 Electric Company, 1921-25; Bell Telephone Laboratories, 1925-. 

 Mr. Mason's work has been largely in transmission studies. 



A. A. Oswald, B.S., Armour Institute of Technology, 1916; E.E., 

 1927. Western Electric Company, Engineering Department, 1916-24; 

 Bell Telephone Laboratories, Inc., 1925-. Mr. Oswald's work has 

 been concerned with the development of long and short wave trans- 

 atlantic and ship-to-shore radio-telephone systems; and, during the 

 War, of systems for airplane radio-communication and radio-control. 



D. A. Quarles, A.B., Yale University, 1916; U. S. Army, 1917- 

 19; Engineering Department, Western Electric Company, 1919- 

 25; Bell Telephone Laboratories. 1925-. Mr. Quarles was earlier 

 engaged in transmission studies of circuits and networks. More 

 recently he was in charge of inspection engineering on apparatus 

 products. As Assistant Director of Apparatus Development, he is 

 now engaged in development work on Outside Plant products. 



Walter A. Shewhart, A.B., University of Illinois, 1913; A.M., 

 1914; Ph.D., University of California, 1917; Engineering Department, 

 Western Electric Company and Bell Telephone Laboratories, 191 8-. 

 Mr. Shewhart is making a special study of the application of probability 

 theories to inspection engineering. 



