"Postmortem: Frog City's Trade Empires" by Rachel Bernstein http://www.gamasutra.com/features/20020125/bernstein_01.htm

GameGirlz Features - Q&A with Rachel Bernstein http://www.gamegirlz.com/articles/bernstein.shtml

Gamespy interviews Bill Spieth on Tropico 2 http://www.gamespy.com/pc/tropico-2-pirate-cove/6521p1.html

Gamespy interviews Bill Spieth on Pantheon http://archive.gamespy.com/legacy/interviews/pantheon_a.shtm