Though she plays their aunt in this film, Irma P. Hall is four years younger than Robert Duvall and James Earl Jones.

James Earl Jones uses his actual stammer as part of his character.

Robert Duvall plays a bigot coming to grips with the fact that he has previously unknown black ancestry and relatives. Duvall's real family tree includes the fact that he is distantly related (eighth cousins twice removed) to Barack Obama, the first black U.S. President, albeit through Obama's mother Stanley Ann Dunham, who was white.

Although the storyline has James Earl Jones' character being about six years older than Robert Duvall's character, Duvall is older than Jones by twelve days.

Despite the fact that this was filmed in Super 35, "Filmed in Panavision" is listed in the end credits.

The North Fork & Southern railroad doesn't run in Arkansas.