Contributors to this Issue 



J. H. IvASLEY, Wheeling Technical College; Westinghouse Machine 

 Company, 1898-1902; Western Electric Company, Inspection Branch, 

 N. Y. C, 1905-07; Chief Process Inspector, New York and Haw- 

 thorne, 1908-09; Chief of Manufacturing Layout Department, 1913; 

 Planning Engineer, 1915; Assistant Technical Superintendent, 1920; 

 Superintendent of Manufacturing Planning, 1926; Hawthorne Works 

 Operating Superintendent, 192 7-. 



F. P. Hutchison, B.S. in Mechanical Engineering, University of 

 Missouri, 1916; Western Electric Company, Manufacturing and 

 Installation Departments, 1916-. Mr. Hutchison has been engaged 

 largely on manufacturing, planning, development, and design. 



Carl R. Englund, B.S. in Chemical Engineering, University of 

 South Dakota, 1909; University of Chicago, 1910-12; professor of 

 physics and geology. Western Maryland College, 1912-13; laboratory 

 assistant. University of Michigan, 1913-14; Bell Telephone Labora- 

 tories, 1914-. Experimental work in radio communication is the 

 field to which Mr. Englund has largely devoted himself since coming 

 to the Laboratories. 



J. G. Ferguson, B.S., University of^California, 1915; M.S., 1916; 

 research assistant in physics, 1915-16; Bell Telephone Laboratories, 

 19 17-. Mr. Ferguson's work has been in connection with the develop- 

 ment of methods of electrical measurement. 



B. W. Bartlett, A.B., Bowdoin College, 1917; West Point, 

 1917-19; B.S., Massachusetts Institute of Technology, 1921; 1st 

 Lieutenant, Engineers' Corps, 1919-22; M.A., Columbia, 1926. Mr. 

 Bartlett was with the Bell Telephone Laboratories from 1922 to 1927, 

 engaged in bridge development and measurement work. He returned 

 to Bowdoin in 1927 as Professor of Physics. 



O. J. ZoBEL, A.B., Ripon College, 1909; A.M., Wisconsin, 1910; 

 Ph.D., 1914; instructor in physics, 1910-15; instructor in physics, 

 Minnesota, 1915-16; Engineering Department, American Telephone 

 and Telegraph Company, 1916-19; Department of Development and 

 Research, 1919-. Mr. Zobel has made important contributions to 

 circuit theory in branches other than the subject of wave filters. 



R. V. L. Hartley, A.B., Utah, 1909; B.A., Oxford, 1912; B.Sc, 

 1913; instructor in physics, Nevada, 1909-10; Engineering Depart- 



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