Veteran character actor Richard Bull has died at age 89.

Bull’s seven-decade career included appearances on countless classic TV shows from the 1950s onward, including Barnaby Jones, Felony Squad, Gomer Pyle USMC, Highway Patrol, Mannix and Voyage To The Bottom of the Sea.

Richard Bull had a recurring role in James Garner’s early 70s western, Nichols. He is best remembered as Nels Olesen on the long-running family drama Little House on the Prairie.

According to IMDB, Bull’s last credited role was a 2011 appearance on the Kelsey Grammer series Boss.