Triplanetary
E. E. 'Doc' Smith & Edward Smith
Lensman (1)
Galactic Patrol
E. E. 'Doc' Smith & John Clute
Lensman (3)
Masters of the Vortex
E. E. 'Doc' Smith
Lensman (7)
Gray Lensman
Lensman (4)
First Lensman
Lensman (2)
Second Stage Lensman
Lensman (5)