Between 1962 and 1986, the Information Processing Techniques Office (I
PTO) of the Defense Advanced Research Projects Agency provided signifi
cant support for computer science R&D. The design and implementation o
f the support programs of this office was the responsibility of a smal
l group of computer scientists who emerged from the growing computer s
cience community. Program directors focused on radical technologies, o
rganized programs to develop them, and promoted their use in various s
ettings, with substantial success. A better understanding of the evolu
tion of the Department of Defense's policy for computing R&D can be ga
ined from an analysis of the backgrounds, research experience, interes
ts, and methods of the people engaged to design and implement this pol
icy in IPTO.