Invader on My Back / Destination: Saturn

From Author Wars - https://authorwars.com/publications/invader-on-my-back--destination-saturn-9975.html

Overview:

Title: Invader on My Back / Destination: Saturn
Author: David Grinnell, Lin Carter, Philip E. High
Year: 1968
Publisher: Ace Books
Price: $0.60
Pages: 107+146
Binding: dos
Type: Omnibus
Title Reference: Invader on My Back
Notes:
- Destination Saturn copyright 1967 by David Grinnell and Lin Carter
  - 107 pages
  - Cover art by Kelly Freas
  - 'complete & unabridged' on the cover
- Invader on My Back copyright 1968 by Philip E. High
  - 146 pages
  - Cover art by Jack Gaughan
  - 'First Book Publication' on the cover
- The two interior art pieces are not credited, but have Gaughan's "JG" on them
• For clear, individual cover images, see here for Invader On My Back and here for Destination: Saturn.