CONTRIBUTORS TO THIS ISSUE 609 



Fellow and Honrv H. Fine Instructor in ^lathematics, Prineeton Uni- 

 versity, 1939 42: ^.S.^M^, 1942 4(), studying exterior l)aUisties of guns 

 and rockets: Los Alamos i-ahoratory, spring 1946; Bell Telephone 

 Laboratories, 1946 . Dr. McMillan has been engaged in mathematical 

 research and consultation work. Member of American Mathematical 

 Society, Institute of Mathematical Statistics, and A.A.A.S. 



.Iamks Z. Mk.nakd, H.'r>., Arkansas State Teachers College, 1941. V. S. 

 .Vrmy, 1941-46). Bell Telephon<> T^aboratories, 1946-. Mr. Menard has 

 been engaged in the devel()i)ment of magnetic recoi'ding eciuipment and 

 autlio e(iuipment for telephone plant applications. 



J. A. MoRTox, B.S. in K.E., Wayne University, 1935; M.S., Uni- 

 \ ersity of Michigan, 1936. Bell Telephone Laboratories, 1936-. Mr. 

 Morton is currently in charge of the development of the transistor and 

 other semi-conductoi' devices. In the past he has been concerned with 

 research on coaxial cables, microwave amplifier circuits, radar receivers, 

 and with \acuum tube development. He designed a microwave tube used 

 in the Xew York-San Francisco microwave relay system. Member of the 

 I.R.E., Eta Kappa Xu, Alpha Delta Psi, jNIackenzie Honor Societ}^ Phi 

 Kappa Phi, and Sigma Xi. 



H. Eahlk \'ArGHAX, B.S. inC.E., Cooper Union, 1933. Bell Telephone 

 Laboratories, 1928-. Since World War II, Mr. Vaughan has been investi- 

 gating switching systems and high speed signaling means. In the past 

 he studied voice operated devices and fundamental effects of speech and 

 noise on voice-frequency signaling systems. During World War II, he 

 was engaged in government projects, conducting research on anti-aircraft 

 computers and fire contr(jl radars. 



Samuel D. White, B.S. in E.E., Rutgers University, 1927; E.E., 

 Ivutgers University, 1932; Bell Telephone Laboratories, 1927-. Lentil 

 1939, Mr. White was a member of the acoustical research department. 

 He then entered the switching apparatus development group and is cur- 

 rently .studying some aspects of relay problems. Member of I.R.E., 

 Acoustical Society of America, and Sigma Xi. 



