Railway with a Heart of Gold (1965)

This film is an account of the Talyllyn Railway, a historic narrow-gauge slate carrier in Tywyn, Wales, and its operation by a preservation society who saved it from being sold for scrap. Although the release date is 1965, it was actually filmed in the early 1950s. Preserved by the Academy Film Archive in 2012.

Unfortunately the movie Railway with a Heart of Gold is not yet available on HBO Max.