According to Mike's Amazing World of DC Comics, the April/May 1981 issue of the World's Finest Comics #268 contains a 10-page spread called "The Blade of Death" featuring the Green Arrow and authored by our very own Bud Simons. Other credits...Penciller: Treevor Von Eeden, Inker: Brent Breeding, Letterer: John Costanza, Colorist: Jerry Serpe.
Now, technically this isn't short fiction. I may just have to start a separate comics bibliography and list this along with Bud's 3 Wild Cards comic credits.
Contrary to popular rumor, Walton Simons is not a psuedonym for Walt Simonson. (That's one reason he wrote the Green Arrow story under his nickname, Bud--to avoid confusion. Unfortunately, it hasn't entirely worked.)