The Grass Tower

From Author Wars - https://authorwars.com/publications/the-grass-tower-552076.html

Overview:

Title: The Grass Tower
Author: Shirley Rousseau Murphy
Year: 1976
ISBN-10: 0689305125
Publisher: Atheneum
Price: $
Pages: 244
Binding: Hardcover
Type: Novel
Title Reference: The Grass Tower
Notes: 1st ed. LCCN contains Summary -- LC subject headings: Space and time--Fiction; Extrasensory perception--Fiction Publ date from contemporary review by Kirkus (undated online)

Cover image from Amazon sometime. As of 2017-03-18 Amazon US and UK show spine and front cover image: -- same design, red rather than brown -- as "Paperback", but apparently a hardcover book