The Observatory (Amazing Stories, April 1942)

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Overview:

Title: The Observatory (Amazing Stories, April 1942)
Author: The Editor
Year: 1942
Type: Essays
Series: Editorial (Amazing Stories)

Editions/Publications:

Unknown. Amazing Stories, April 1942 (Unknown, The Editor, Ziff-Davis Publishing Company, $0.25, 276 pages, pulp, MAGAZINE)
2016 . Science Fiction Classics #14 (2016, The Editor, Pulp Tales Press, ISBN-10: 9780692639757, $12.95, 276 pages, Trade Paperback, Anthology)