The Big Jump

From Author Wars - https://authorwars.com/publications/the-big-jump-35960.html

Overview:

Title: The Big Jump
Author: Leigh Brackett
Year: 1967
Publisher: Ace Books
Price: $0.50
Pages: 128
Binding: Paperback
Type: Novel
Title Reference: The Big Jump
Notes:
• © 1955 Publication date from Tuck, not mentioned in the book. • The artist is not credited, Jones is on the artwork • Interior art piece is not credited, has Gaughan's "JG" on it