Mary Louise — L. Frank Baum

Lyman Frank Baum (1856-1919) was an American author, actor, and independent filmmaker best known as the creator, along with illustrator W. W. Denslow, of one of the most popular books ever written in American children's literature, The Wonderful Wizard of Oz (1900), better known today as simply The Wizard of Oz. He wrote thirteen sequels, nine other fantasy novels, and a plethora of other works, and made numerous attempts to bring his works to the stage and screen.