Police Your Planet

From Author Wars - https://authorwars.com/publications/police-your-planet-254978.html

Overview:

Title: Police Your Planet
Author: Erik Van Lhin
Year: 1956
Publisher: Avalon Books
Price: $2.50
Pages: 224
Binding: Hardcover
Type: Novel
Title Reference: Police Your Planet
Notes:
• Copyright 1956, no other date, printing or number line • Price from Tuck, none on the book/jacket • The author's name is misspelled on the front of the jacket and spine as "Lihn"; spelled correctly everywhere else • Jacket design by Ed Emshwiller on front flap, the artwork also has EMSH on it