Question: What is the publishing date of this novel by Ruth Plumly Thompson, originally written in 1959, and featuring Jinnicky the Red Jinn as a principal pre-existing character?
Sentence (from "Jinnicky the Red Jinn"): (He makes a cameo appearance in "The Wishing Horse of Oz", and he is the principal pre-existing character in Thompson's sub-canonical penultimate Oz book, "Yankee in Oz").
Relevant evidence: Yes