Geez, novel? Perhaps A Wrinkle in Time by Madeline L'Engle. If that counts. Fifth or sixth grade? Maybe something before that, but it's unlikely.
Back to Camus. He's my second favorite writer after Buk. Very different, of course, but at least Buk didn't hate him. Had some sideways compliments for him in poems I've read. Not that it matters much.
Edit: Well of course; I read Jules Verne's 80 Days Around the World and H.G. Wells' The Time Machine and a few others in about third grade. Perhaps Treasure Island?
Hell, I don't remember what I read last week, let alone back in 1972.
I've just been shelving books in our new home, and some of those old paperbacks were among them. Hmmm...gonna have to look more closely. Just because I read it when I was 8 or 9 years old doesn't mean I shouldn't read it again.