Cavalcade of America - Season 3 Episode 5 Mountain Man
Overview: Relates the story of James Ohio Pattie, the first American to write an account of a visit to California. Reenacts his arrival in San Diego, the Mexican provincial capital, in 1828, and portrays his role in averting a smallpox epidemic, thus winning the friendship of the Mexicans and freedom for the Americans whom they held in captivity.