You are looking for https://w3id.org/people/essepuntato/papers/rash-ads2017.html

It's here: https://www.dougengelbart.org/content/view/266/177/.

Dear reader: you want https://www.rfc-editor.org/rfc/rfc1630.html.

Look here: http://profs.etsmtl.ca/mmcguffin/research/zigzag/

You're looking for http://web.archive.org/web/20051207225702/http://www.oreillynet.com/pub/wlg/7567.

You are looking for https://licsjournal.org/index.php/LiCS/article/view/794

This URL is eferenced from http://annettevee.com/.

You're looking for https://solidproject.org/self-hosting/css.

You're looking for http://jonudell.net/udell/2006-10-01-the-screening-room-9-windows-live-writer.html

Try https://www.w3.org/Administration/HTandCERN.txt

Referenced from http://info.cern.ch/hypertext/WWW/Bibliography.html.

This page is now a 404, and the Wayback Machine (whose first access attempt is dated 2013) doesn't have a copy. (It was already a 404 by then.)

The document you are looking for can be found at https://www.w3.org/Conferences/IETF92/udi2.txt

You're looking for https://www.rfc-editor.org/rfc/rfc5322.html