The Time Masters

From Author Wars - https://authorwars.com/books/the-time-masters-1409189.html

Overview:

Title: The Time Masters
Author: Rudolph de Harak
Year: 1953
Type: Cover Art

Editions/Publications:

Unknown. The Time Masters (Unknown, Rudolph de Harak, Rinehart, $2.50, 249 pages, Hardcover, Novel)