Astounding Science Fiction April 1950 (Volume 45, Number 2)
Illustrations by Brush, Ed Cartier, Orban, and Hubert Rogers. Cover by Hubert Rogers (for "The Wizard of Linn.")

Serial: "The Wizard of Linn" (Part 1 of 3) by A. E. van Vogt

Novelette: "Okie" by James Blish (first of "Cities in Flight" series; formed part of Earthman, Come Home)

Stories: "Greed" by L. Ron Hubbard
"The Inspector's Teeth" by L. Sprague de Camp
"U-Turn" by Duncan H. Munro (Eric Frank Russell)

Article: "Our Turbulent Atmosphere" by Willy Ley

John W. Campbell's editorial is "Control Circuit."