Memorandum # 300, Review of Alternative Communications, Navigation, Missile and Space Tracking and Data Acquisition Facilities, 5/19/1964,
"NSAM 300 Review of Alternative Communications, Navigation, Missile & Space Tracking & Data Acquisition Facilities," National Security Action Memorandums, NSF, Box 4,
LBJ Presidential Library,
accessed May 01, 2025,
https://www.discoverlbj.org/item/nsf-nsam300