L. Frank Baum’s Wonderful Land of Oz Baum’s novels introduced several interesting concepts to young readers, such as robots and cyborgs, and also included a number of extremely progressive elements. The lead characters for each novel are young women who are placed in perilous situations and escape through their wits. Tip/Ozma presents an interesting case in and of itself, as the character shifts genders from male to female. Additionally, Baum shows off armies composed entirely of women, with female commanders. Baum seems to have been heavily influenced by the politics of his mother and wife, and notably wrote in the defense of women’s suffrage a full two decades before women had the right to vote in the United States.