• "Pushbutton War," Analog, August 1960
• "Delivery Tube," Worlds of Tomorrow, May 1966
• ".Not a Prison Make," Analog, September 1966
• "Tunnel Warrior," Worlds of If, October 1966
• "To Change Their Ways," Analog, April 1967
• "Security Measure," Analog, June 1967
• "Secret Weapon," Analog, April 1968
• "Brain Drain," Galaxy, April 1968
• "Persistence," Analog, May 1969
• "Zero Sum," Analog, July 1971
• "The Iceworm Special," Analog, July 1981
• "Pandora's Printout," Analog, April 1983
• "Paper Virus," Analog, Mid-December 1993
• "To Have What It Takes," Analog, July/Aug 2000
• "A Bridge in Time," Analog, October 2007

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