Biography of Theodore Dreiser
P.A.L. Bibliographies
http://www.csustan.edu/english/reuben/pal/chap6/dreiser.html
Why Did They Ever Ban a Book This Bad? (Essay)
Cyclic Symbolism
http://www.yale.edu/ynhti/curriculum/units/1987/2/87.02.07.x.html
The Question and Answer section for Sister Carrie is a great resource to ask questions, find answers, and discuss the novel.
They live together for a few months. No exact length of time is provided.
Are you giving me statements to pick from?
I would have to say naive.... or unhappy.