Astounding Science Fiction May 1950 (Volume 45, Number 3)
Illustrations by Brush, Ed Cartier, Miller, Hubert Rogers, and Ward. Cover by Brush (for "The Helping Hand.")

Novelette: "The Helping Hand" by Poul Anderson

Stories: "The Apprentice" by Miles A. Acheson
"The Potters of Firsk" by Jack Vance

Serial: "The Wizard of Linn" (Part 2 of 3) by A. E. van Vogt

Article: "Dianetics: The Evolution of a Science" by L. Ron Hubbard

John W. Campbell's editorial is "Concerning Dianetics."