The Earth in Peril / Who Speaks of Conquest?

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Overview:

Title: The Earth in Peril / Who Speaks of Conquest?
Author: Lan Wright, Donald A. Wollheim
Year: 1957
Publisher: Ace Books
Price: $0.35
Pages: 158+160
Binding: dos
Type: Omnibus
Title Reference: The Earth in Peril
Notes:
- Published February 1957 per Cole Checklist of SF Anthologies.
  - The Earth in Peril is 158 pages, ©1957
  - The artist is not credited, EMSH is on the cover
  - Who Speaks of Conquest is 160 pages, ©1957
  - The artist is not credited, no visible signature
  - Attribution to Meltzoff from the Ace Image Library