Letter (Astounding, July 1939)

From Author Wars - https://authorwars.com/books/letter-astounding-july-1939-131846.html

Overview:

Title: Letter (Astounding, July 1939)
Author: Isaac Asimov
Year: 1939
Type: Essays

Editions/Publications:

Unknown. Astounding Science Fiction, July 1939 (Unknown, Isaac Asimov, Southern Illinois University Press, ISBN-10: 0809309912, $12.95, [ix]+180 pages, Hardcover, Anthology)