The Scarecrow of Oz by L. Frank Baum. The Wizard of Oz Series. The Scarecrow of Oz is the ninth book set in the Land of Oz written by L. Frank Baum. Published on July 16, 1915, it was Baum's personal favorite of the Oz books and tells of Cap'n Bill and Trot journeying to Oz and, with the help of the Scarecrow, overthrowing the cruel King Krewl of Jinxland. Cap'n Bill and Trot (Mayre Griffiths) had previously appeared in two other novels by Baum, The Sea Fairies and Sky Island. The Army of Children which besieged the Postoffice, conquered the Postmen and delivered to me its imperious Commands, insisted that Trot and Cap'n Bill be admitted to the Land of Oz, where Trot could enjoy the society of Dorothy, Betsy Bobbin and Ozma, while the one-legged sailor-man might become a comrade of the Tin Woodman, the Shaggy Man, Tik-Tok and all the other quaint people who inhabit this wonderful fairyland.