Speedy in Oz

From Author Wars - https://authorwars.com/publications/speedy-in-oz-366452.html

Overview:

Title: Speedy in Oz
Author: Ruth Plumly Thompson
Year: Unknown
ISBN-10: 0345337050
Publisher: Del Rey / Ballantine
Price: $19.00
Pages: 239
Binding: Trade Paperback
Type: Novel
Title Reference: Speedy in Oz
Notes: Stated - First Ballantine Books Trade Edition: October 1986.
However it is more likely a print on demand edition. There is no number line. Price doesn't match Locus for first printing. Also book is larger (8.5" x 5.5") than the other verified Del Rey Thompson Oz books 1st printings (8" x 4.5").
Canada price $28.00.