Conversation so far:
who wrote the legend of king arthur and his knights of the round table
The legendary Arthur developed as a figure of international interest largely through the popularity of Geoffrey of Monmouth's 12th-century Historia Regum Britanniae (History of the Kings of Britain).
Who wrote the book called the wonderful wizard of oz
L. Frank Baum wrote the book The Wonderful Wizard of Oz.
who is the publisher of the book The Wonderful Wizard of Oz
George M. Hill Company is the publisher of the book The Wonderful Wizard of Oz.
what genre of book is The Wonderful Wizard of Oz
The type of genre that The Wonderful Wizard of Oz falls into is fantasy children's novel.

Question: was there a sequel
Self-contained rewrite: was there a sequel to the book The Wonderful Wizard of Oz