With "The Sea Fairies," my book for 1911, I ventured into a new field of fairy literature and to my delight the book was received with much approval by my former readers, many of whom have written me that they like Trot "almost as well as Dorothy."

As Dorothy was an old, old friend and Trot a new one, I think this is very high praise for Cap'n Bill's little companion. Cap'n Bill is also a new character who seems to have won approval, and so both Trot and the old sailor are again introduced in the present story, which may be called the second of the series of adventures of Trot and Cap'n Bill. 

But you will recognize some other acquaintances in "Sky Island." Here, for instance, is Button-Bright, who once had an adventure with Dorothy in Oz, and without Button-Bright and his Magic Umbrella you will see that the story of "Sky Island" could never have been written. As Polychrome, the Rainbow's Daughter, lives in the sky, it is natural that Trot and Button-Bright meet her during their adventures there. 

Lyman Frank Baum (May 15, 1856–May 6, 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, 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. 
 
Other Books of Author:  

• The Wonderful Wizard of Oz (1900) 
• Dorothy and the Wizard in Oz (1908) 
• American Fairy Tales (1901) 
• The Emerald City of Oz (1910) 
• Ozma of Oz (1907) 
• The Lost Princess of Oz (1917) 
• Glinda of Oz (1920) 
• The Road to Oz (1909) 
• Tik-Tok of Oz (1914) 
• The Patchwork Girl of Oz (1913)