Dean A. Grennell

(November 1, 1923–April 10, 2004)
He was an active science fiction fan who was sometimes called dag, he edited the fanzine Grue, as well as a gun expert and managing editor of Gun World magazine.

He grew up in rural Wisconsin and was in the Army Air Corps during World War II. In the 1950s he became active in fandom. His best-known fanzine was Grue, begun in 1953. The title Grue ("The Fan's Magazine") was a play on words for a popular men's magazine True, "The Man's Magazine".