1973 "The Edge of the Knife"
1996 "Omnilingual"
2142-2241 "When in the Course--"
c2432 "Four-Day Planet"
2468 Uller Uprising
2542-2641 "Naudsonce"
2596 Little Fuzzy, Fuzzy Sapiens, Fuzzies and Other People
2751 "Oomphel in the Sky"
c2836 The Cosmic Computer/"Graveyard of Dreams"
c3596-c3605 Space Viking
c4063 "A Slave is a Slave"
4878? "Ministry of Disturbance"