Before I make another erroneous statement about Fairfax Falls, was trying to find on the Internet something about the men who carved out the tunnel at Fairfax Falls. I am sure I read some place that they were Italian Craftsmen, but so far can't remember where I read it, or if indeed I actually read it. In the course of searching, I came up with the interesting postcard when must have been around 1900 when all the manufacturing plants were up at the Falls.
(http://www.vtgrandpa.com/photos/albums/Fairfax-Falls/fxfalls_090716.jpg)