The Enchanted Island of Yew: Whereon Prince Marvel Encountered the High Ki of Twi and Other Surprising People is a children's fantasy novel written by L. Frank Baum, illustrated by Fanny Y. Cory, and published by the Bobbs-Merrill Company in 1903.

[1] The first edition contained eight color plates and many colored-ink illustrations stamped over the text, and it was dedicated to Kenneth Gage Baum, the youngest of the author's four sons.

Sesely, daughter of Baron Merd of Heg, and two companions are enjoying a picnic in the Forest of Lurla when they are accosted by a fairy.

The newly minted male is dubbed Prince Marvel, and, furnished with fairy arms and armor and an enchanted horse (a deer transformed), sets out to have adventures.

Marvel captures all fifty-nine of the band and is ready to send them to the gallows – but Wul-Takim convinces the naive ex-fairy that the robbers are now honest men, whom it would be unfair to hang.

A greater challenge awaits him in Spor, where he faces the Royal Dragon of the hideous and evil King Terribus.

Its legs, which were as thick as those of an elephant, had scales which were set with rubies and emeralds.The dragon, however, is far less formidable than it appears: its inner fire was blown out in a gale, and its keepers are out of matches.

He meets his sternest test when he confronts the Red Rogue of Dawna; even then, however, his native fairy abilities enable him to emerge victorious.