Incredible Tales, Apri 1953
R. Wolfe was a science fiction writer in the 1950s who co-wrote the story "Legends of the Ferengi", which was published in the April 1953 issue of Incredible Tales magazine. (DS9: "Far Beyond the Stars")
This character was only mentioned in writing.
R. Wolfe is obviously a homage to Star Trek writer Robert Wolfe.