The Cowardly Lion of Oz (1923) is the seventeenth of the Oz books created by L. Frank Baum and the third written by Ruth Plumly Thompson. It was illustrated by John R. Neill.
In the story, the Cowardly Lion believes that he has depleted the reserve of courage imbued in him by the Wizard (as told in The Wonderful Wizard of Oz). Someone soon misdirects the Lion into thinking that he can only replenish his courage by eating a courageous man. Since the Lion dislikes the notion of harming anyone, he resolves to do the deed as quickly as possible, and so embarks on his quest. The more usual characters, Dorothy, Glinda, and their compatriots, become involved before a satisfactory conclusion is reached.