The Lost Princess of Oz is the eleventh canonical Oz book written by L. Frank Baum. Published on June 5, 1917, it begins with the disappearance of Princess Ozma, the ruler of Oz and covers Dorothy and the Wizard's efforts to find her. The introduction to the book states that its inspiration was a letter a little girl had written to Baum:

Latest episodes of the podcast The Lost Princess of Oz

• 00 – Dedication of The Lost Princess of Oz
• 01 – A Terrible Loss
• 02 – The Troubles of Glinda the Good
• 03 – Robbery of Cayke the Cookie Cook
• 04 – Among the Winkies
• 05 – Ozma’s Friends Are Perplexed
• 06 – The Search Party
• 07 – The Merry-Go-Round Mountains
• 08 – The Mysterious City
• 09 – The High Coco-Lorum of Thi
• 10 – Toto Loses Something
• 11 – Button-Bright Loses Himself
• 12 – The Czarover of Herku
• 13 – The Truth Pond
• 14 – The Unhappy Ferryman
• 15 – The Big Lavender Bear
• 16 – The Little Pink Bear
• 17 – The Meeting
• 18 – The Conference
• 19 – Ugu the Shoemaker
• 20 – More Surprises
• 21 – Magic Against Magic
• 22 – In the Wicker Castle
• 23 – The Defiance of Ugu the Shoemaker
• 24 – The Little Pink Bear Speaks Truly
• 25 – Ozma of Oz
• 26 – Dorothy Forgives