Crap, I missed the Hemingway option. I read the semi-autobiographical WWI one. What was it? "A Farewell to Arms"! Very good.
Before noticing that it was a tossup between "Atlas" and "Stranger". Both are on my list.
In fact one of my biggest regrets in life is that my Aunt, who I lived with a couple times when I was starting out after college and I loved more than anyone I can think of except possibly my Dad, had a copy of it. Because she was a lifelong Democrat with a hate of guns and I was afraid it was some liberal garbage, I never read it. By the time I found out the opportunity I'd missed I was in Portland and she was in Minneapolis, dying of lung cancer.
After the funeral it was one of about three things from her place that I'd absolutely resolved I would get, but I couldn't find it anywhere.