Richard Bull

Richard Bull (June 26, 1924 – February 3, 2014) was an American movie, stage, and television actor.
He is best known for his role as Nels Oleson on the NBC TV series "Little House on the Prairie" which aired from 1974 to 1983 and "Doc" on "Voyage to the Bottom of the Sea".
Bull died on the morning of February 3, 2014 at the Motion Picture Television Fund campus in Calabasas, California from pneumonia. He was 89 years old.