This book contains the following story:

The Gremlins
The Gremlins is the story of Gus, a British World War II fighter pilot, who during the Battle of Britain turned to look out on the wing of his plane only to see an amazing sight: a little man, no more than six inches tall with horns growing from his head, drilling a hole in the plane's wing. Gus was the first man to ever see a Gremlin, and what happened after that would change the war, and the world, forever.