The Outsiders by S. E. Hinton
Slaughter house - Five ! Kurt Vonnegut ! Great book by a great author !
Of Mice and Men by John Steinbeck
One writer who is greatly underrated is John D.McDonald who wrote the Travis McGee series. They may only be thrillers but McDonald included a character named Meyer (no first name) who is the author's voice in the stories. They're worth reading just to get Meyer's words of wisdom.
The Little House series by Laura Ingalls Wilder.
It may be a children's book, buy my 45year old dad and his 55 year old sister still love and read them. And, personally, I think that it is a good series.
Moby Dick. It was much better the second reading