Astounding Science Fiction June 1952 (Volume 49, Number 4)
Illustrations by Ed Cartier, Paul Orban, Welker. Cover by H. R. van Dongen (for "The Specter General.")

Novelettes: "The Specter General" by Theodore R. Cogswell
"Blood Bank" by Walter M. Miller, Jr.

Stories: "The Ghost Town" by Donald Kingsbury
"Ascent Into Chaos" by M. C. Pease.

Science: "Transistors" by J. J. Coupling.

John W. Campbell's editorial is "Uncertainty Principle"; Book reviews by P. Schuyler Miller.