Potential, Ariel Schrag. An autobiographical comic book written by a straight/bi/lesbian/queer girl about her junior year of high school. Totally changed my ideas about honesty in writing.
http://www.amazon.com/Potential-Ariel-Schrag/dp/094315104X
The Eighteenth Emergency, Betsy Byars. Re-read this when I was an adult and realised how brilliantly Byars does dialogue, and how she builds the whole millieu around it. http://www.amazon.co.uk/Eighteenth-Emergency-Betsy-Byars/dp/...
Goodbye To Berlin, Christopher Isherwood. A memoir of Isherwood's time in pre-Nazi Germany. The most beautiful prose I have ever read. http://en.wikipedia.org/wiki/Goodbye_to_Berlin