jquery/learn.jquery.com — pull request #204 by bobholt (2012-11-29 00:47:29+00:00)
Title: Remove unused exercise files - fixes #137

Removing unused exercise files from ajax, effects, and events.

I don't find any other references to external exercises, solutions, or demos, so I believe this issue can be closed. Any that skipped my attention can be re-opened as separate issues.