I am a sucker for a good rocket picture. Blazing New Trails has nothing to do with spaceflight except it was a way to make a school reading text more exciting! There was a chapter in here on reading a story about spaceflight and then answering some questions. But no real reason for a rocket on the cover.
The joy of eBay is that sometimes the picture of something is enough to make you shell out a few bucks just to have a cool picture. Happy landings!