I was looking for some information on Anthracite coals mined in Pennsylvania and conducted a preliminary internet search on mine locations. One result that showed up was
very unique indeed, in that, it spoke about a mine (Mammoth) that has been closed for a while (and since reopened for possible
coal-to-liquids projects). What struck me about this
web-hit was that it was from a 1902 newspaper clipping archived in the
National Library (Australia)'s site.
I did my bit in correcting the first two paragraphs of that particular
newspaper article and would probably go back to correct more in the near future. If you have an interest in restoring historical items, this is one way to do it sitting in the comfort of your home! You would also be contributing to knowledge sharing.