Introduction (When the Sleeper Wakes)

From Author Wars - https://authorwars.com/books/introduction-when-the-sleeper-wakes-828451.html

Overview:

Title: Introduction (When the Sleeper Wakes)
Author: Hugo Gernsback
Year: 1959
Type: Essays

Editions/Publications:

Unknown. When the Sleeper Wakes (Unknown, Hugo Gernsback, Ace Books, $0.35, 288 pages, Paperback, Novel)
Unknown. When the Sleeper Wakes (Unknown, Hugo Gernsback, Ace Books, $0.40, 288 pages, Paperback, Novel)