They

From Author Wars - https://authorwars.com/publications/they-196149.html

Overview:

Title: They
Author: Marya Mannes
Year: 1968
Publisher: Doubleday
Price: $4.95
Pages: 215
Binding: Hardcover
Type: Novel
Title Reference: They
Notes:
"First Edition" Price from Tuck Cover artist ("Jacket Photo") on back flap of Archive.org copy; Gotfryd is also credited for design.