220 BELL SYSTEM TECILXIC.IL JOi-RXAL 



Karl K. Darrow, S.B., University of Chicago, 1911; University 

 of Paris, 1911-12; University of Berlin, 1912; Ph.D., in physics and 

 niatliematics, University of Chicago, 1917; Engineering Depart- 

 ment, Western Electric Company, 1917-24; Bell Telephone Labora- 

 tories, Inc., 1925—. Mr. Darrow has been engaged largely in pre- 

 paring studies and analyses of published research in various fields 

 of physics. 



Ralph Bown, M.E., 1913, M.M.E., 1915, Ph.D., 1917, Cornell 

 University, Captain Signal Corps, U. S. Army, 1917-19; Depart- 

 ment of Development and Research, American Telephone and Tele- 

 graph Company, 1919 — . Mr. Bown has been in charge of work 

 relating to radio transmission development problems. 



DeLoss K. Martin, B.S., Polytechnical College of Engineering, 

 1920; U. S. Navy, 1918-1919; Department of Development and 

 Research, American Telephone and Telegraph Company, 1919 — . 

 Mr. Martin's work has related particularly to radio broadcast trans- 

 mission. 



Ralph K. Potter, B.S., Whitman College, 1917; E.E., Columbia 

 University, 1923; U. S. Army, 1917-19; Department of Development 

 and Research, American Telephone and Telegraph Company, 1923—. 

 Mr. Potter has been engaged in experimental work relating to radio 

 transmission phenomena. 



