Let me see...
I liked the Hardy Boys;
Rick Brant (he was like the Hardy Boys, but he lived with scientists and got to use all sorts of cool machines );
Trixie Belden was better than Nancy Drew (in my childish opinion) because she had a family instead of just a dad. - Even then, I found it annoying that the first thing they always seemed to do was kill off the mother.
The Pink Motel;
Harold and the Purple Crayon;
Where the Wild Things Are;
The Secret Garden;
The Little Princess;
The Pirates in the Deep Green Sea;
The Magic Pawnshop;
The Dragon Book - It was shaped just like a dragon!
Swiss Family Robinson;
Robinson Crusoe;
Anything Dickens, or Jules Verne, or Shakespeare, or Twain;
And there was a huge pink book full of poems and wonderful woodcut illustrations to go with them.
Oh yes, Heidi...
I liked Dr. Suess when he started publishing books, but I was a little old for them. I had a good time reading them when the kids were little, though!