Spider Robinson: Belaboring the Obvious about "Belaboring the Obvious" About the making of the music in Callahan's Crosstime Saloon, and making it available on the CD "Belaboring the Obvious". http://www.spiderrobinson.com/obvious.htm

Home of the Underdogs Details of the role-playing game based on the Callahan's Crosstime Saloon series. http://www.the-underdogs.org/game.php?name=Callahan%27s+Crosstime+Saloon

Balmoralsoftware Walkthrough Guide to completing the game including images of some of the puzzles to solve. http://www.balmoralsoftware.com/qin/qin.htm