Subspace Explorers
E. E. "doc" Smith
Subspace (1)
Spacehounds of Ipc
Skylark Three
Skylark (2)
The Skylark of Space
Skylark (1)
Imperial Stars: Family D'Alembert Book 1
E. E. "doc" Smith & Stephen Goldin
Family d'Alembert (1)
Getaway World: Family D'Alembert Book 4
Family d'Alembert (4)