The Encyclopedia of Superheroes

From Author Wars - https://authorwars.com/books/the-encyclopedia-of-superheroes-2854320.html

Overview:

Title: The Encyclopedia of Superheroes
Author: Jeff Grubb
Year: 1988
Type: Reviews

Editions/Publications:

Unknown. Dragon Magazine, April 1988 (Unknown, Jeff Grubb, TSR, $3.50, 108 pages, quarto, MAGAZINE)
Unknown. Dragon Magazine, April 1988 (Unknown, Jeff Rovin, TSR, $3.50, 108 pages, quarto, MAGAZINE)