From publisher blurb:
Devil's Gorge, on the Arizona/Mexico border, has been the site of many mysterious disappearances, apparitions, violent conflicts, and odd occurances. In 1961, Apache chief Cochise is falsely accused of kidnapping, and rides into the haunted gorge on the trail of the real kidnappers, pursued by U.S. soldiers. The resulting shootout triggers the 10-year Apache war.
Five time-travellers arrive at Devil's Gorge in 1961. Can they solve the mystery of the gorge without altering history and creating Paradox?
This is an introductory adventure for Spectrum: Time-Travel Role Playing.