Lots of good stuff left to make another movie. The most important part of the book was destroyed by Goldwyn and his writers. This story ends when Dorothy demands that the Wizard give the people what he promised them. He gave the Tinman a heart shaped watch which was guaranteed to go on ticking. Dorothy did go home.
History begins anew with each generation.
In the USA, in the Eastern Communist Bloc, in the poor barrios and small farms in Latin America, in the wonderful avannas and shambas of Africa, in the lovely cities and quiet villages of Asia, the same four virtues, wrapped in policies of social justice, move us toward our full humanity. In as much as each of you now present are moving toward the fullness of your morality, I hereby grant you, on behalf of the Wizard of Oz and as the Official Socialist Historian of the Great and Mighty Land of Oz, the right and obligation to work all the days of your life for social justice. When you do this, you are living the best of your religion at the edge of history. It was turned down by several publishers. The stories became less and less radical as Baum got richer and richer.