Author Sinclair Lewis
Arrowsmith
http://www.sparknotes.com/lit/arrowsmith/
Babbitt
http://www.sparknotes.com/lit/babbitt/
Main Street
http://www.sparknotes.com/lit/mainstreet/
Main Street Teacher Guide
http://us.penguingroup.com/static/pdf/teachersguides/mainstreet.pdf