I'm sure many of us here are involved in the Latin (and possibly Ancient Greek) Wikipedia. I'd be interested to see what sort of pages people have been working on.
I just started yesterday (and I've never edited any of the English pages) but here's what I've done.
http://la.wikipedia.org/wiki/Coloratum (all of it)
http://la.wikipedia.org/wiki/Glasgovia (just the historia section)
I'd be thankful if anyone has suggestions and corrections. I've assuredly made many small errors, and I wasn't sure about a few renderings of mine. I had to get a little creative to come up with terms like "The Pike's Peak Gold Rush" ("Mons Picus Decursus pro Auro").
Seeing that almost every page I linked to doesn't yet exist (and that Colorado was one sentence before I started), I suppose there is some work to be done.