Folks,
Happy St Patricks day to you all!
There is a narrow gauge (42" I think) locomotive called Lady Edith and two passenger cars at the Pine Creek Railroad at Adaire State Park, in New Jersey.
Edgar Meade brought two narrow gauge locomotives over to the US around 1960; one of them has been shipped back to Ireland.
Details of the Lady Edith can be found in David Conrad's book.
Then there is a double deck tram car from the Hill of Howth line in Ireland at the Orange Empire Railway museum at Perris, CA. They have some 42" track; but I do not think the car has been run in a number of years.
Ted Miles