Speedy in Oz by L. Frank Baum, Ruth Plumly Thompson (1986, Paperback)

Ruth Plumly Thompson continued the stories created by L. Frank Baum,those famous ones you may recall,about a land called Oz. No one grows old in OZ and happiness is around every corner.
Thompson's 14th book about Oz and the series' 28th is called Speedy in Oz. You just gotta love Speedy, a slightly sly boy who loves adventures and who can't wait to return to Oz. (This trip was not his first) He finds trouble around every corner with his sidekick, Terrybubble, the living dinosaur skeleton.
Terrybubble and Speedy land on Umbrella Island and help detour some sinister plans to throw Speedy to the Giant, Loxo who has a vendetta against Umbrella Island.
Our heroes only visit Oz for a short time(2-3 chapters) which is never enough for any Oz fan but gives us that Oz craving we need so badly.
Thompson created some great moments in Oz history with this clever installment of Speedy the boy form New York & Terrybubble, the jolly set of dino bones, who both shall live forever in Oz as two of the best loved characters created by Thompson. Carry on Boys!