Contributors to this Issue 



John R. Carson, B.S., Princeton, 1907; E.E., 1909; M.S., 1912. 

 American Telephone and Telegraph Company, 1914-. Mr. Carson is 

 Transmission Theory Engineer and has charge of theoretical trans- 

 mission studies. He has published extensively on electric circuit 

 theory and electric wave propagation. 



George Crisson, M.E., Stevens Institute of Technology, 1906; 

 instructor in Electrical Engineering, 1906-10. American Telephone 

 and Telegraph Company, Engineering Department, outside plant 

 division, 1910-14; transmission and protection division, 1914-19; 

 Development and Research Department, transmission development 

 division, 1919-. 



P. G. Edwards, B.E.E., Ohio State University, 1924; E.E., 1929. 

 Western Union Telegraph Company, Traffic Department, 1919-21; 

 Plant Department, 1921-22. American Telephone and Telegraph 

 Company, Long Lines Plant Department, 1922 24; Department of 

 Development and Research, 1924-. Mr. Edwards has been engaged 

 in the development of toll testboard equipment and toll testboard 

 methods. 



Harvey Fletcher, B.Sc, Brigham Young, 1907; Ph.D., Chicago, 

 1911; Instructor of Physics, Brigham Young, 1907-08 and Chicago, 

 1909-10; Professor, Brigham Young, 1911-16; Engineering Depart- 

 ment, Western Electric Company, 1916-25; Bell Telephone Labo- 

 ratories, 1925-. As Acoustical Research Director, Dr. Fletcher is in 

 charge of investigations in the fields of speech and audition. 



Ronald M. Foster, S.B., Harvard, 1917. American Telephone 

 and Telegraph Company, Engineering Department, 1917-19; Depart- 

 ment of Development and Research, 1919-. Mr. Foster has been 

 working upon various mathematical problems connected with the 

 theory of electrical networks. 



T. C. Henneberger, E.E., Lehigh University, 1921; U. S. Army, 

 1918. American Telephone and Telegraph Company, Department of 

 Development and Research, 192 1-. Mr. Henneberger has been 

 engaged chiefly in the development of outside plant construction and 

 maintenance apparatus and methods. 



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