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From: Charles Packer <mailbox@cpacker.org>
Newsgroups: rec.arts.sf.written
Subject: Question about ISFDB statistic
Date: Sun, 13 Apr 2025 07:51:50 -0000 (UTC)
Organization: A noiseless patient Spider
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Why the wide swing in the number of titles in the ISFDB 
by year of publication -- 50% jump -- from 1938 to 1939? 
It's hard to believe that it reflects a step function in public
interest. The context is as follows:

year 1936 count 4738
1937  4628
1938  4117
1939  6245
1940  6685
1941  5746
1942  5513