The Sixth Pan Book of Horror Stories

From Author Wars - https://authorwars.com/publications/the-sixth-pan-book-of-horror-stories-999532.html

Overview:

Title: The Sixth Pan Book of Horror Stories
Author: Herbert van Thal
Year: 1972
ISBN-10: 0330104470
Publisher: Pan Books
Pages: viii+222
Binding: Paperback
Type: Anthology
Title Reference: Green Thoughts
Notes: Info from Archive.org copy. "8th Printing 1972" on copyright page; previous printings are also listed. Most of the prices on the back cover are covered by a sticker but South Africa 60¢ and Canada 95¢ can be seen.