CONTRIBUTORS TO THIS ISSUE 1237 



Tendick also belongs to four honor societies, Tau Beta Pi, Eta Kappa 

 iNu, Sigma Xi and Phi Kappa Phi. 



Leishman R. Wrathall, B.S., 1927, University of Utah. Mr. Wrathall 

 did another year of graduate work at the University of Utah and joined 

 Bell Telephone Laboratories in 1929. For many years he was primarily 

 concerned with studies of the characteristics of non-linear coils and ca- 

 pacitors. During World War II non-linear coils were used extensively in 

 radar systems, and his work in this field was intensified. Later he was 

 occupied with general circuit research. He is now engaged in studies of 

 conductor problems, particularly digital repeaters, as a member of the 

 Transmission Research Department at Murray Hill. 



