The High King

From Author Wars - https://authorwars.com/publications/the-high-king-41500.html

Overview:

Title: The High King
Author: Lloyd Alexander
Year: 1968
Publisher: Holt, Rinehart and Winston
Price: $4.50
Pages: 285
Binding: Hardcover
Type: Novel
Title Reference: The High King
Notes: First edition Publ date March 1968 from copyright page of 10th printing; 1968-03-01 per review by Kirkus same date (posted 2011 with later cover image, illustrator, page-count, ISBN)