The Puzzle Planet / The Angry Espers

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Overview:

Title: The Puzzle Planet / The Angry Espers
Author: Robert A. W. Lowndes, Lloyd Biggle, Jr.
Year: 1961
Publisher: Ace Books
Price: $0.35
Pages: 119+136
Binding: dos
Type: Omnibus
Title Reference: The Angry Espers
Notes:
- Cover for The Puzzle Planet has "First Book Publication"
  - Artist's signature on artwork "EMSH", Ed Emshwiller.
  - The Puzzle Planet 119 pages
- Cover for The Angry Espers has "Complete Novel"
  - Cover artist is uncredited and signature is not visible on the artwork. ACE Image Library credits Valigursky.
  - The Angry Espers 136 pages
- See here for The Puzzle Planet