Beyond the Vanishing Point / The Secret of ZI

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Overview:

Title: Beyond the Vanishing Point / The Secret of ZI
Author: Ray Cummings, Kenneth Bulmer
Year: 1958
Publisher: Ace Books
Price: $0.35
Pages: 95+161
Binding: dos
Type: Omnibus
Title Reference: The Secret of ZI
Notes:
- Beyond the Vanishing Point
  - 95 pages.
  - Copyright © 1958 by Ace Books, Inc.
  - "Complete Novel" on the cover
  - Ace Image Library credits Valigursky with the cover
- The Secret of ZI
  - 161 pages.
  - Copyright © 1958 by Ace Books, Inc.
  - "Complete & Unabridged" on cover
  - Cover artist not credited in book. Signature "EMSH" is on the artwork
  .