(CHILDREN'S, OZ) THOMPSON, RUTH PLUMBLY A group of 10 books from the Oz series by Ruth Plumbly Thompson. Chicago: Reilly & Lee, 1925-1935. 8vo, publisher's quarter cloth, pictorial pastedown title label to all vols. Speedy in Oz, (1934). The Gnome King of Oz, (1927). OJO in Oz, (1933). The Wishing Horse of Oz, (1935). The Yellow Knight of Oz, (1930). Captain Salt in Oz, (1936). Jack Pumpkinhead of Oz, (1929). Pirates in Oz, (1931). The Hungry Tiger of Oz, (1926). The Lost King of Oz, (1925).