How did the screenplay change as different scripts were written?
The writers often created new incidents to liven up the story. The original idea was to turn the story into a slapstick musical comedy, so there were a few deviations from what was written in the book. Some of the earlier scripts included a son for the Wicked Witch of the West whom she wanted to put on the throne of Oz, a stuck-up niece for Miss Gulch, a rescue from the Wizard’s balloon by the Munchkin fire department, a singing princess and her cowardly suitor who gets transformed into a lion, a rainbow bridge that the witch constructs as a trap for Dorothy, and a romance between Dorothy and one of the farmhands. When the script got too bogged down, however, Langley, Ryerson and Woolf would turn to Baum’s book for inspiration, and the results were generally an improvement.