The Flying Girl series turned out to be just two books. In this, genius inventor Stephen Kane has invented a boat plane by adding a boat to the bottom of his plane. But the maiden voyage does not go well and the rest of the tale is a shipwreck and pirate story I really didn't expect. It was fun but I'm glad we didn't have to go too long for someone to say "Hey, we have this airplane, might that help?". I also didn't see much point to Madeline Dentry except as useful yacht owner but perhaps she was destined for more adventures that never got written. It has been fun working my way through the non-Oz adventures of Baum, though.