Hi, at he.wikisource we created a namespace for any and all material *about* texts that are not actual texts themselves. Besides illustrations, annotations and the like, this certainly includes things like timelines, illustrative mappings of connected works, etc.

Obviously categories should be well-used as the first step.

Date: Mon, 09 May 2011 10:32:46 +0200
From: Lars Aronsson <lars@aronsson.se>
Subject: [Wikisource-l] Timelines
To: Wikisource <wikisource-l@lists.wikimedia.org>
Message-ID: <4DC7A6AE.40004@aronsson.se>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Has any language of Wikisource tried new methods to connect
works or mentions regarding the same time?

The Swedish Wikisource has categories for works by decade
(e.g. 1830s works), but that's all. And I think we could
do more.

For a specific date or event, we may have mentions in history
books as well as newspapers from that day. But how should
these points best be linked together? Are categories really
our best tool?