SMDC History: NIKE II study demonstrates intercept feasibility | Article | The United States Army
New Nike Zeus missile readied to replace old Hercules model — Calisphere
AT&T Archives: Nike Zeus Missile System - YouTube
What were the differences between Nike Ajax, Nike Hercules, and Nike Zeus anti aircraft missiles? Were they different warheads mated to the same basic missile, or completely different missile systems? - Quora
Nike Missile DF-20 Launch Battery Site Dallas-Fort Worth Defense Area Texas
Nike Missile Links
SMDC History: Nike-Zeus, ABMA and Dr. von Braun | Article | The United States Army