Which film features Morgan Freeman in his first credited film appearance?

Morgan Freeman (born June 1, 1937) is an American actor, film director, and film narrator. Freeman won an Academy Award in 2005 for Best Supporting Actor with "Million Dollar Baby" (2004), and he has received Oscar nominations for his performances in "Street Smart" (1987), "Driving Miss Daisy" (1989), "The Shawshank Redemption" (1994), and "Invictus" (2009). He has also won a Golden Globe Award and a Screen Actors Guild Award.

During the early 1960s, Freeman worked as a dancer at the 1964 World's Fair and was a member of the Opera Ring musical theater group in San Francisco. He acted in a touring company version of "The Royal Hunt of the Sun", and also appeared as an extra in the 1965 film "The Pawnbroker". Freeman made his off-Broadway debut in 1967, opposite Viveca Lindfors in "The Nigger Lovers" (about the Freedom Riders during the American Civil Rights Movement), before debuting on Broadway in 1968's all-black version of "Hello, Dolly!" which also starred Pearl Bailey and Cab Calloway.

"Who Says I Can't Ride a Rainbow!" is a 1971 American family drama film directed by Edward Andrew Mann and starring Jack Klugman. It also features Morgan Freeman in his first credited film appearance. It is based on the true story of Barney Morowitz, who "struggled to maintain a pony stable in Greenwich Village."