Venturer Twelve
1 Thunder of Stars (1968) (with Dan Morgan)
2 Seed of Stars (1972) (with Dan Morgan)
3 Neutral Stars (1973) (with Dan Morgan)
4 Where No Stars Guide (1975)
2 Seed of Stars (1972) (with Dan Morgan)
3 Neutral Stars (1973) (with Dan Morgan)
4 Where No Stars Guide (1975)
