I don’t suppose you’re old enough to remember the fine tv series of the 60s called ‘Profiles in Courage’ based, I guess, on Kennedy’s book. The episode about Harriet enthralled me as a child! And just when the most climatic moment occurred, she fainted due to the head wound!
I still don’t agree with taking Jackson off but she was a hell of a broad.
Anyway, the show you had in mind was probably The Great Adventure, which broadcast an episode about Harriet Tubman on Friday, November 1, 1963. Supposedly, Steven Spielberg is working on an account of Harriet Tubman for HBO. With such great source material, if they can avoid political correctness and ideological ax-grinding, it should make for quite a show.