alexander key

Sometime between 2nd and 5th grade I read a book in school, that was either "Fantasy" or "Science Fiction". I think I read it twice, but as I'm now 53, that was a few DECADES ago. I'm guessing between 1972 and 1977 at the latest. A young boy was out one night on the 4th of July. I think...

Oh, I don't know whether to start a new thread but I have another request! It's a shorter novel, about a group of teenagers or so climbing this mountain, and the whole story is about that, and when they reach the top they find out there's a spaceship on top that has something to do with their...