I showed three-foot gauge trains in
Narrow Gauge - PentaxForums.com Hawaiian Steam Locomotive in Connecticut - PentaxForums.com
There are actually two-foot gauge trains. They were originally imported from the UK country of Wales, then used in Massachusetts and Maine.
Today, there are four {to my knowledge} tourist operations in Maine and one in Massachusetts.
The operation in Massachusetts is very much a professional operation, and has shrunk as their land has become more valuable,
but the Maine operations seem to be expanding. When we lived in Massachusetts, I joined the track crew helping to rebuild a portion of the WW&F.
Here are three pictures I took in 2010 when my wife and I rode the train.
The second photo shows them adding water at a typical Maine water tank {built recently by local volunteers}, which is enclosed as protection from Winter weather.
At the reversing point, the engineer went through the coach and invited the "older gentleman" {me!} to join him in the locomotive {he had not been working the days I volunteered}