DoD Directive 5105.15

Citation
DoD Directive 5105.15: Department of Defense Advanced Research Agency (Feb. 7, 1958) (full-text).

Overview
This Directive established the Advanced Research Projects Agency (ARPA). It gave ARPA the responsibility "for the direction or performance of such advanced projects in the field of research and development as the Secretary of Defense shall, from time to time, designate by individual project or by category."