L Frank Baum

Oz
   1. The Wonderful Wizard of Oz (1900)
     aka The Wizard of Oz
   2. The Marvelous Land of Oz (1904)
     aka The Land of Oz
   3. Ozma of Oz (1907)
   4. Dorothy and the Wizard of Oz (1908)
   5. The Road to Oz (1909)
   6. The Emerald City of Oz (1910)
   7. The Patchwork Girl of Oz (1913)
   8. Tik-Tok of Oz (1914)
   9. The Scarecrow of Oz (1915)
   10. Rinkitink in Oz (1916)
   11. The Lost Princess of Oz (1917)
   12. The Tin Woodman of Oz (1918)
   13. The Magic of Oz (1919)
   14. Glinda of Oz (1920)
continued in the series: Oz

Twinkle Tales (as by Laura Bancroft)
   Prairie-dog Town (1905)
   Twinkle and Chubbins (2009)

Aunt Jane's Nieces (as by Edith Van Dyne)
   1. Aunt Jane's Nieces (1906)
   2. Aunt Jane's Nieces Abroad (1907)
   3. Aunt Jane's Nieces At Millville (1908)
   4. Aunt Jane's Nieces At Work (1909)
   5. Aunt Jane's Nieces in Society (1910)
   6. Aunt Jane's Nieces and Uncle John (1911)
   7. Aunt Jane's Nieces On Vacation (1912)
   8. Aunt Jane's Nieces On The Ranch (1913)
   9. Aunt Jane's Niece's Out West (1914)
   10. Aunt Jane's Nieces in the Red Cross (1915)

Boy Fortune Hunters (as by Floyd Akers)
   The Boy Fortune Hunters in Alaska (1908)
   The Boy Fortune Hunters in Egypt (1908)
   The Boy Fortune Hunters in China (1909)
   The Boy Fortune Hunters in Yucatan (1910)
   The Boy Fortune Hunters in the South Seas (1911)

Trot and Cap'n Bill
   1. The Sea Fairies (1911)
   2. Sky Island (1912)

Flying Girl (as by Edith Van Dyne)
   The Flying Girl (1911)
   The Flying Girl and Her Chum (1912)

Mary Louise (as by Edith Van Dyne)
   Mary Louise (1916)
   Mary Louise in the Country (1916)
   Mary Louise Solves a Mystery (1917)
   Mary Louise and the Liberty Girls (1918)
   Mary Louise At Dorfield (1920)
   Mary Louise and Josie O'Gorman (1922)

   The Life and Adventures of Santa Claus (1902)
   The Master Key (1902)
   The Enchanted Island of Yew (1903)
   The Fate of a Crown (1905) (as by Schuyler Staunton)
   Queen Zixi of Ix (1905)
   Annabel (1906) (as by Suzanne Metcalf)
   Daughters of Destiny (1906) (as by Schuyler Staunton)
   John Dough and the Cherub (1906) (with John R Neill)
   Tamawaca Folks (1907) (as by John Estes Cooke)
   The Last Egyptian (1908)
   Policeman Bluejay (1909) (as by Laura Bancroft)
     aka Babes in Birdland
   Jaglon and the Tiger Fairies (1953)
   The Surprising Adventures of the Magical Monarch of Mo and His People (1968)
   Our Landlady (1996)

   The Magical Monarch of Mo (1899)
     aka A New Wonderland
   Mother Goose in Prose (1899)
   American Fairy Tales (1901)
   Animal Fairy Tales (1969)
   The Purple Dragon and Other Fantasies (1976)
   The Santa Claus Stories (2020)
   The Dover Anthology of Classic Christmas Stories (2023) (with others)