#1 "Communications In the Second Century of the Telephone, Marvels and Miracles, Dreams of Ash"

#5 "Masters of Solitude, Interstellar Probe, SSOAR - A Colony in Space"

#6 "The Shades of Things To Come, A Matter of Some Gravity, On The Road"

#7 "Understanding the Strugatsky brothers, Extraterrestrial Translation, A Look At John Schoenherr"

#8 "A.E. Van Vogt, Earthport Approaching Reality, Beyond Earth"

#10 "Asteroid Mining, Intelligent Computers, Beyond Earth"

#11/12 "Special Double Issue, Bicycling in Space, Human-Powered Space Transportation"

#13 "The Ringworld Engineers, On the Tenth of Apollo"

#14 "The Ringworld Engineers, On the Tenth of Apollo 13"

#15 "Lepton Power, Speculations on the Spirit, The World's Greatest Non-Talent in SF"

#16 "Gift Guide, Media Man, The Ringworld Engineers"

#2 "Atoms and Opinions, Ye Who Would Sing, Longshanks"

#3 "Naming of the Solar System, Adora, Stalking Game"

#4 "The Futurophobes, SSOAR, Thinking Out Loud"

#9 "Frederik Pohl, Think of A Number, Beyond Earth Part Two"