This companion site to Ken Burns' new film, which aired on November 4 and 5, 1997, is highlighted by the Archive: a timeline of the trip; a collection of related links; an extensive bibliography; and over 800 minutes of unedited, full-length RealPlayer interviews with seven experts featured in the film (transcripts also available). Into the Unknown contains an interactive story written by PBS Online that allows users to take command of the expedition and lead it to glory or disaster. There is also biographical and historical information (Inside the Corps), a section on the Native American tribes that the expedition met with, a VDO Live interview with the director of the film, and educational resources designed around the topic. This is a prime example of a successful PBS companion site effort.