Mike,

Daniel Boone Homestead in Birdsboro, PA has a c.1820 working water powered up & down saw mill.  Also there is a working water powered grist mill near Howe's Caverns but I can not recall the name.  Perhaps someone else will know it.

Rolland Miner
Director
NWDB Survey 2000
http://nwdb2000.homestead.com/home.html
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