The Marvelous Land of Oz

No Dorothy in this second Oz book, but with a Gump, a Woogle-Bug, a Pumpkinhead, as well as the return of the Tin Woodman and the Scarecrow, no Dorothy is needed.

Young Jip is under the care of the cruel witch Mombi. When she threatens to turn Jip into a statue, he decides to run away with Jack Pumpkinhead, a creature Jip constructed himself, newly animated by Mombi's potion, the Powder of Life.

And off the two go, and they have adventures that include trying to oust the girl soldiers who have taken over the Emerald City, escaping from the Jackdaws' nest, constructing their own flying Gump out of a moose head and two sofas and some palm fronds.

This may be my favorite Oz. How did I miss this as a child?