Cart and Cwidder

From Author Wars - https://authorwars.com/publications/cart-and-cwidder-6187.html

Overview:

Title: Cart and Cwidder
Author: Diana Wynne Jones
Year: 1977
ISBN-10: 0689305567
Publisher: Atheneum
Price: $6.95
Pages: 193
Binding: Hardcover
Type: Novel
Title Reference: Cart and Cwidder
Notes: 1st US ed. (stated, LCCN implies) Info from Locus #200 (March 1977)

Cover artist is inferred 2023-05-22 from Amazon.com report of a "school & library binding" edition or copy (ASIN US, below). Amazon provides a matching image as 1977, "by Diana Wynne Jones (Author), Julia Noonan (Illustrator)". This edition is known to be unillustrated, and Noonan is our cover artist for the sequel Drowned Ammet in its 1st US ed., Atheneum 1978 (primary verified).