View years by changing the year in the URL
Managed to save up to the middle of 2018
http://nsfarchives.altervista.org/test/forum/archive2017_config.pl.html
Earliest
http://nsfarchives.altervista.org/test/forum/archive2003_config.pl.html
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To search, use Google Advanced Search, under site or domain put: nsfarchives.altervista.org
then put in your search terms in the appropriate boxes