Tik-Tok of Oz

Tik-Tok of Oz is the 8th book in the Oz series by L. Frank Baum. In it, Betsy Bobbin, a girl from Oklahoma, is shipwrecked with her mule, Hank, in the Rose Kingdom of Oz. She meets the Shaggy Man there and the two try to rescue the Shaggy Man's brother from the Nome King. This book is partly based upon Baum's stage musical, The Tik-Tok Man of Oz, which was in turn based on Ozma of Oz.