Castle Falkenstein Resources: A primer for new players (mostly a summary of the rulebook), and a lot of "Under Construction" links.
Recommended Reading: Fiction, atlases, histories and films recommended in the Castle Falkenstein mailing list.
Sophie's Castle Falkenstein Page: Contains background material, including a special section on Victorian airships, and information on a PBeM game.
The Falkenstein Babbage Authors League: An index of sites in the Castle Falkenstein Web Ring
The Mana Bros. Castle Falkenstein Pages: Castle Falkenstein resources: 4 NPCs and 2 gizmos. Promised resources for the Mediterranean Area are under development.