Space Pilots

From Author Wars - https://authorwars.com/books/space-pilots-1598851.html

Overview:

Title: Space Pilots
Author: Willy Ley
Year: 1957
Type: Non-fiction
Series: Adventure in Space

Editions/Publications:

Unknown. Space Pilots (Unknown, Willy Ley, Guild Press (New York), Hardcover, Non-fiction)