This 11 page article by Brig. Gen. H. Mc D. Brown., published in The Army Communicator  gives an insider's view of SCORE, the world's first communications satellite and the final phase of other pioneering contributions of the Signal Corps to the early space age. 

Before the creation of NASA, the U.S. Army was developing technology to explore space for communications.

Introduction - Page 58
General Brown assigned to SRDL - Page 59
SCORE - Page 60

A Signal Corps space odyssey
Dr. Ziegler joins team - Page 63
Vanguard and TIROS - Page 65
First TIROS photos - Page 66
COURIER - Page 66
ECHO stamp controversy - Page 67
NASA absorbs SRDL projects - Page 68
SATCOM created - Page 68