The Spaceship Under the Apple Tree

First book in a series of classic children's science fiction. One on-line blurb states: "It's the gentle, wonder-full story of Eddie, a boy scout who spends summers on his grandma's farm, and his encounter with Marty from Martinea. The two become fast friends and travel the world in Marty's spaceship, disguised as a little green car and powered by secret power ZZZ. Exciting and easy to read, and drenched with Slobodkin's beguiling illustrations, here's a series kids will love to discover." (Gord Wilson, alivingdog.com)