The Wonderful Wizard of Oz is the first of the Oz books followed by The Marvelous Land of Oz. 16 Oz books in all plus one extra by Ruth Plumly Thompson.
"The Marvelous Land of Oz
Being an account of the further adventures of the Scarecrow and Tin Woodman and also the strange experiences of the highly magnified Woggle-Bug, Jack Pumpkin-head, the Animated Saw-Horse and the Gump; the story being A Sequel to The Wizard of Oz"
List of Oz books
• The Wonderful Wizard of Oz (1900)
• The Marvelous Land of Oz (1904)
• Queer Visitors from the Marvelous Land of Oz (1905, comic strip depicting 27 stories)
• Ozma of Oz (1907)
• Dorothy and the Wizard in Oz (1908)
• The Road to Oz (1909)
• The Emerald City of Oz (1910)
• The Patchwork Girl of Oz (1913)
• Little Wizard Stories of Oz (1913, collection of 6 short stories)
• Tik-Tok of Oz (1914)
• The Scarecrow of Oz (1915)
• Rinkitink in Oz (1916)
• The Lost Princess of Oz (1917)
• The Tin Woodman of Oz (1918)
• The Magic of Oz (1919, posthumously published)
• Glinda of Oz (1920, posthumously published)
• The Royal Book of Oz (1921, posthumous attribution--entirely the work of Ruth Plumly Thompson)
