Sky Island (version 2)
Author: first_name: L. Frank
last_name: Baum
Language: English
Year: 1912

 A little girl (Trot) and her friend (Cap'n Bill) team up with a young boy named Button-Bright. Button-Bright had found a magical umbrella in his attic. He meets the kind girl and sailor and they are transported to a different world in the sky where he and his friends face many dangers. (Summary by francesb)