When I was trying to figure out what is the font in this graph which appears in a syntax book published by Blackwell, I found some good font resources.
1. A font recognizer web site http://www.myfonts.com/WhatTheFont/
2. Palatino – A good font for printing and reading. It’s also the one used in the graph above.
3. A large collection of fonts – Adobe Font Folio 11.