Cause of death: emphysema
Dorothy Michelle Provine (January 20, 1935 – April 25, 2010) was an American singer, dancer and actress. Born in 1935 in Deadwood, South Dakota, she grew up in Seattle, Washington, and was hired in 1958 by Warner Bros., after which she first starred in The Bonnie Parker Story and played many roles in TV series. During the 1960s, Provine starred in series such as The Alaskans and The Roaring Twenties, and her major film roles included It's a Mad, Mad, Mad, Mad World (1963), Good Neighbor Sam (1964), The Great Race (1965). That Darn Cat! (1965), Kiss the Girls and Make Them Die (1966), Who's Minding the Mint? (1967), and Never a Dull Moment (1968). In 1968, Provine married the film and television director Robert Day and mostly retired. She died of emphysema on April 25, 2010, in Bremerton, Washington.
Source : Wikipedia