There's a lot of interesting forgotten stuff out there.
Project pages edit
Some of the very oldest pages still exist in hidden form. They were what we'd now think of as policy or guidance pages, and were created before there were namespaces in what's now called article space. Later on editors cut-and-paste moved pages from their old CamelCase titles to new ones and converted the old titles into redirects. While articles usually had a straightforward transition in this way, the project page titles sometimes got re-redirected several times as project policies and guidelines evolved and lost any direct relation to their original content.
- Wikipedia:What is a wiki (formerly at WhatIsaWiki) - January 2001
- SummarizeDiscussion - January 2001
- WikiPedians - January 2001
- HowDoesOneEditaPage - February 2001 (shortly after its 18th birthday someone with no understanding of history tried to have it deleted. They failed)
- NamingConventions - February 2001
- WhatIsaWiki - February 2001
- DisRuption - March 2001
Pages containing or linking to obscure revisions edit
- Wikipedia:Historical archive/Earliest sandbox history - 2001-2003
- User:Dbenbenn/bad user pages - features a lot of users that only edited in 2001
- Wikipedia talk:Unicode/Archive 1 - 2001-2003
- User:Nemo bis/Bug 323 revisions - page revisions made inaccessible through the contributions page due to errors in the software transition of 2002
- Wikipedia:Usemod article histories - pages that were imported slightly later
- Sexual slavery/version 2 was originally White slavery, created in 2003, but in 2008 got renamed to this and orphaned. Why?
Discussions edit
- meta:Meta:Historical/Archives index - lots of pages that were moved to Meta as a way of separating them from articles, before we had a project namespace for that exact purpose
- Wikipedia:Village pump/Wikipedia chat - 2002
- Wikipedia talk:MediaWiki (archive) - 2002
- User talk:Cumguzzler - January 2003
- Wikipedia:Articles for deletion/Wikicide - June 2003
- User talk:EntmootsOfTrolls/on ban pages - August 2003
- User:Jimbo Wales/Ceasefire - August 2003
Tasks and reports edit
- Category talk:Newspapers/Tree - a manual attempt to build a tree of newspaper categories, December 2005
- User:R3m0t/Reports - an abandoned effort from 2005 to resolve orphaned talk pages
- Wikipedia:Changing attribution for an edit - from 2003-2005 you could request that an edit you made while logged out be assigned to your account