Notable deaths of 2013 (35 images)

Folk music icon Richie Havens died of a heart attack at his home in New Jersey on April 23. He was 72. The Brooklyn, N.Y., native is best known as the artist who opened the 1969 Woodstock music festival. (UPI Photo/Laura Cavanaugh)

British broadcaster David Frost -- best known for his interviews with former U.S. President Richard Nixon -- said on September 1 at the age of 74. (UPI Photo/Jim Ruymen)

The "Diff'rent Strokes" patriarch died in Livermore, California on January 16. He was 89. (UPI PHOTO/Larry Rubenstein/FILES)

Former Speaker of the House Tom Foley, a Democratic Congressman from Washington state, died at the age of 84 on October 18. (UPI Photo/Files)