The Greatest Adventure

From Author Wars - https://authorwars.com/publications/the-greatest-adventure-41047.html

Overview:

Title: The Greatest Adventure
Author: John Taine
Year: 1960
Publisher: Ace Books
Price: $0.35
Pages: 256
Binding: Paperback
Type: Novel
Title Reference: The Greatest Adventure
Notes:
• There is no statement of publishing/printing on the copyright page other than ©1929. • The artist is not credited; no visible signature. • Cover match with artist attribution in Randy Broecker's "Fantasy of the 20th Century" • Also, Jane Frank's "Science Fiction and Fantasy Artists of the Twentieth Century: A Biographical Dictionary" • "Complete & Unabridged" on the cover