Guard at the Gates of Hell

From Author Wars - https://authorwars.com/books/guard-at-the-gates-of-hell-95869.html

Overview:

Title: Guard at the Gates of Hell
Author: George W. Olney
Year: 1981
Type: Short Fiction

Editions/Publications:

Unknown. Analog Yearbook II (Unknown, George W. Olney, Ace Books, ISBN-10: 0441022367, $2.50, 294 pages, Paperback, Anthology)