Robert Weston Smith, known commonly as Wolfman Jack 

                         (21 January 1938 – 1 July 1995)

Wolfman Jack had just finished broadcasting his last live radio program,
a weekly show nationally syndicated from Planet Hollywood in downtown
Washington, D.C. Shortly after arriving at his home located in Belvidere,
North Carolina, he died of a heart attack. The Wolfman was only 57. 

1973

Nat King Cole (1919 – 1965)

The first true Star Trek convention was held in New York beginning on Friday,
January 21, 1972 and ran through the 23rd. It was started by a small group
that collected enough money, and rented a hotel room ballroom, attracting a
group of like-minded fans,

James Doohan (“Scotty”) speaking to the crowd at an early Star Trek convention.

Leonard Nimoy speaking at the 2011 convention

D.J. Johnny Otis with son Johnny “ Shuggie” Otis, Jr. in 1957 at KFOX radio
in Los Angeles.

1993

         Johnny Otis  (December 28, 1921 – January 17, 2012)

Otis was a singer, musician, talent scout, D.J., composer, arranger, and
record producer. He was inducted to the Rock and Roll Hall of Fame in
1994 as a nonperformer for his work as a songwriter and producer. Otis
discovered Etta James and Little Richard.

1958