Triplanetary
E.E. "Doc" Smith
Lensman (1)
Spacehounds of IPC
The Space Opera Megapack
John W. Campbell Jr. & Jay Lake & E.E. "Doc" Smith
Skylark Three
Skylark (2)
The Skylark of Space
Skylark (1)
Masters of the Vortex
Lensman (7)
Imperial Stars
Family d'Alembert (1)
Gray Lensman
Lensman (4)
The Galaxy Primes
First Lensman
Lensman (2)