"Lost Princess of Oz" by L. Frank Baum is a delightful continuation of the Oz series. The story follows Princess Ozma, who goes missing and the search for her leads Dorothy and her friends on a thrilling adventure through the magical land of Oz. The characters are well-developed and the world-building is fantastic. The narrative is fast-paced, keeping readers engaged from start to finish. Overall, this book is a wonderful addition to the Oz series and is sure to captivate both young and old readers alike.

Book Description:
Oh My Goodness !!! Princess Ozma is missing and no one can find her. The whole kingdom of OZ is upset and our heroes must set out to brave many dangers and adventures to search for their beloved girl ruler. When Princess Ozma mysteriously disappears, four search parties are sent out, one for each of Oz's four countries. Most of this delightful book covers Dorothy and the Wizard's efforts to find her. Meanwhile, Cayke the Cookie Chef discovers that her magic dishpan (on which she bakes her famous cookies) has been stolen. Along with the Frogman, they leave their mountain in Winkie Country to find the pan.