The Giant Horse of Oz

From Author Wars - https://authorwars.com/publications/the-giant-horse-of-oz-364932.html

Overview:

Title: The Giant Horse of Oz
Author: Ruth Plumly Thompson
Year: Unknown
Publisher: Reilly & Lee
Pages: 283
Binding: Hardcover
Type: Novel
Title Reference: The Giant Horse of Oz
Notes: No statement of printing.
Date sometime between 1934 (semi-script publisher) and late 1950s spine imprint per Bienvenue's The Book Collector's Guide to L. Frank Baum and Oz.
Bound in red cloth with blank endpapers.