“The Stunning Science Fiction Caper,” Thomas N. Scortia (as Gerald MacDow), 1957 – (short) A detective shows up looking for the renowned sf editor, MacLeb, to find out that he’s nothing more than a figment of the imagination of two editorial staff. A mysterious man has shown up at conventions, however, and is now at their office.
Comments: Read in Laughing Space.
Author: Wikipedia: “Thomas Nicholas Scortia (August 29, 1926 – April 29, 1986) was a science fiction author. He worked in the American aerospace industry until the late 60s/early 70s. He collaborated on several works with fellow author Frank M. Robinson. He sometimes used the pseudonyms ‘Scott Nichols,’ “‘MacDow,’ and ‘Arthur R. Kurtz.'”