This page links to off-site datasheets that might disappear.
... and indeed the off-site link is failing now. I'll repoint the link to the archive.org copy of the page that has disappeared. Kurt (talk) 06:57, 29 April 2021 (PDT)
Update: The page is now free of off-site links, except to archive.org. Kurt (talk) 09:40, 29 April 2021 (PDT)