Astounding Science Fiction, March 1942.

Contains the first publication of “Runaround,” the Asimov robot story that gave the Three Laws of Robotics their first explicit statement, recited by its two engineer-narrators on p.100. Cover story “Recruiting Station” by A. E. van Vogt. Acquired, along with the May 1942 issue also in this collection, while pursuing rocketry material; outside the collection’s core subject, but kept for its own significance.