On the Road to Science Fiction: From Heinlein to Here

From Author Wars - https://authorwars.com/books/on-the-road-to-science-fiction-from-heinlein-to-here-901222.html

Overview:

Title: On the Road to Science Fiction: From Heinlein to Here
Author: James Gunn
Year: 1979
Type: Essays

Editions/Publications:

Unknown. Isaac Asimov's Science Fiction Magazine, March 1979 (Unknown, James Gunn, Davis Publications, $1.25, 196 pages, digest, MAGAZINE)