Some of his better known roles include Gideon on Daniel Boone, Ongaro in Beneath the Planet of the Apes, SRT in George Lucas' THX 1138, Joshua in The Legend of Nigger Charley, and Sheriff Ed Little in the 1980s TV series The Dukes of Hazzard.

He attended Klamath Union High School and actively played football and track and field, which led to an unsuccessful try-out for the 1960 Summer Olympics.

He was a guest at the 2012 Memphis Film Festival's "A Gathering of Guns 4: A TV Western Reunion" at the Whispering Woods Hotel and Conference Center in Olive Branch, Mississippi.

During the 1970s Blaxploitation era, Don appeared alongside Fred "The Hammer" Williamson, D'Urville Martin, and Gloria Hendry in such films as Legend of Nigger Charley, Black Caesar, and Sugar Hill.

[2] Throughout his career, Don made several guest appearances in many popular TV series, including Adam 12, Night Gallery, Ironside, The Streets of San Francisco, Harry O, Little House on the Prairie, Starsky and Hutch, The Bionic Woman, Fantasy Island, and The A-Team.