Public Domain Movies released in 1971

Born to Win

J.J. (George Segal) is a former hairdresser turned heroin addict trying to satisfy his $100 per day habit and deal with the New York City drug culture. In order to get by, he turns narc and starts ratting on his friends.

Lady Frankenstein

From IMDb: When Dr. Frankenstein is killed by a monster he created, his daughter and his lab assistant Marshall continue his experiments. The two fall in love and attempt to transplant Marshall's brain in to the muscular body of a retarded servant Stephen, in order to prolong the aging Marshall's life. Meanwhile, the first monster seeks revenge on the grave robbers who sold the body parts used in its creation to Dr. Frankenstein. Soon it comes after Marshall and the doctor's daughter.

Evel Knievel

Found this one on Google(As PD). Evel Knievel (1938-2007) From IMDB: Biography of the famed motorcycle daredevil, much of which was filmed in his home town of Butte, Montana. The film depicts Knievel reflecting on major events in his life just before a big jump.

Evel Knievel

Biography of the famed motorcycle daredevil Knievel reflecting on major events in his life just before a big jump. Stars George Hamilton and Sue Lyon.