630 BELL SYSTEM TECHNICAL JOURNAL 



Frank B. Jewett, A.B., California Institute of Technology, 1898; 

 Ph.D., University of Chicago, 1902. American Telephone and Tele- 

 graph Company, Transmission and Protection Engineer, 1904-12. 

 Western Electric Company, Assistant Chief Engineer, 1912-16; Chief 

 Engineer, 1916-21; Vice President and Chief Engineer, 1921-22; 

 Vice President, 1922-25. International Western Electric Company, 

 Vice President, 1922-25. American Telephone and Telegraph Com- 

 pany, Vice President, and Bell Telephone Laboratories, President, 

 1925-. Dr. Jewett is a Past President of the American Institute of 

 Electrical Engineers. 



Edward C. Molina, Engineering Department of the American 

 Telephone and Telegraph Company, 1901-19, as engineering assistant; 

 transferred to the Circuits Design Department to work on machine 

 switching systems, 1905; Department of Development and Research, 

 1919-. As Switching Theory Engineer, Mr. Molina has made con- 

 tributions to the theory of probability and its applications to telephone 

 problems, such as the efficiency of various trunking arrangements and 

 the significance of data derived from samples. 



H. S. Osborne, B.S., Massachusetts Institute of Technology, 1908; 

 Austin Research Fellow in Engineering, 1908-10; Eng.D., 1910. 

 American Telephone and Telegraph Company, Engineering Depart- 

 ment, 1910-19; Department of Development and Research, 1919-20; 

 Department of Operation and Engineering, 1920-. Mr. Osborne is 

 Transmission Engineer and as such is responsible for assisting the 

 Associated Companies in connection with telephone and telegraph 

 transmission and protection matters. 



