Contributors to this Issue 



Raymond D. Mindlin, B.A., Columbia University, 1928; B.S., 1931; 

 C.E., 1932; Ph.D., 1936. Assistant 1932-38, Instructor 1938-40, Assistant 

 Professor 1940-45, Associate Professor 1945-, Department of Civil Engineer- 

 ing, Columbia University. Consultant, Section T, National Defense 

 Research Committee (later Office of Scientific Research and Development), 

 1940-45, on the development of the rugged radio proximity fuze and on 

 mathematical problems in fire control. Consultant, Bell Telephone Labora- 

 tories, 1943-44, Member of the Technical Staff 1944-45, Consultant 1945-. 

 Dr. Mindlin has been concerned with the fields of mathematical and 

 experimental mechanics. 



J. R. Pierce, B.S. in Electrical Engineering, California Institute of 

 Technology, 1933; Ph.D., 1936. Bell Telephone Laboratories, 1936-, 

 Engaged in study of vacuum tubes. 



A. L. Samuel, A.B., College of Emporia (Kansas), 1923; S.B. and S.M. 

 in Electrical Engineering, Massachusetts Institute of Technology, 1926. 

 Additional graduate work at M.I.T. and at Columbia University. Instruc- 

 tor in Electrical Engineering, M.I.T. , 1926-28. Mr. Samuel joined the 

 Technical Staff of the Bell Telephone Laboratories in 1928, where he has 

 been engaged in electronic research and development. Since 1931, his 

 principal interest has been in the development of vacuum tubes for use at 

 ultra-high frequencies. 



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