How did cowboy star William Boyd, famous as Hopalong Cassidy, die?
—Minnie M. Lee, Union Bridge, Md.
Boyd, who was born in Hendrysburg, Ohio, and grew up in Tulsa, Okla., died in 1972 at the age of 77 from complications of Parkinson's disease and heart failure. A silver-haired good guy who dressed in black and rode a white horse named Topper, Boyd transitioned from movies to TV in the 1950s. Since 1991, the Friends of Hoppy Fan Club has celebrated his life and career with a Hopalong Cassidy Festival in Cambridge, Ohio, near Boyd's birthplace.