The Life and Times of Grizzly Adams is a 1974 independent feature film produced by Charles E. Sellier Jr. and Raylan D. Jensen for Sun Classic Pictures. The film's popularity led to an NBC television series of the same name. The title character, played by Dan Haggerty, was loosely based on California mountain man John "Grizzly" Adams (1812–1860). There were several sequels made for TV.