Book Review: Isaac Asimov's "Tales of the Black Widowers"
- Geoffrey Avalon, a patent attorney (based on L. Sprague de Camp)
- Emmanuel Rubin, a mystery novelist and acquaintance of Isaac Asimov (based on Lester del Rey)
- James Drake, a chemist (based on Dr. John D. Clark)
- Thomas Trumbull, an expert in cryptography for the United States government (based on Gilbert Cant)
- Mario Gonzalo, an artist, who usually draws a portrait of the evening's guest (based on Lin Carter)
- Roger Halsted, a high school mathematics teacher, fond of jokes and limericks (based on Don Bensen)
- Henry Jackson, the club's waiter, was not based on an actual person, but according to Asimov was inspired by PG Wodehouses character Jeeves.