Afterthoughts:

From Author Wars - https://authorwars.com/books/afterthoughts-2566956.html

Overview:

Title: Afterthoughts:
Author: Robert Silverberg
Year: 1960
Type: Essays

Editions/Publications:

Unknown. The Science Fiction Fanzine Reader: Focal Points 1930-1960 (Unknown, Robert Silverberg, Nonstop Press, ISBN-10: 9781933065670, $30.00, 404 pages, Trade Paperback, Non-fiction)