According to the article, it's a replica of the William Crooks and its train (the original is in the Lake Superior Railroad Museum in Duluth), but no indication whether it's a full-sized replica or a scale model. Can't seem to find a website for this group or any photos online either. Does anybody have any more info?

Perusal of the link provided indicates that the locomotive and its train is a 1/2 scale replica. The NMRHA is the Northern Minnesota Railroad Heritage Association. The original William Crooks was on display for many years in the St. Paul Union Depot but was moved to Duluth when the Depot shut down in the 1970's.