Greg:
So what is an authentic tank? I doubt that even the Navahoe tank is "Original". They deteriorate. We were at Cresco last week doing some interpertive work and took a good look at the tank. Some parts are obviously old and some are "newer" but it is still a Rio Grande tank to my way of looking at it complete with wood foundation beams and laid up foundations under some of the down-hill areas. We were looking for the rest of the buildings there and what artifacts still exsist there. Lots of hand forged nails, sort of looks like the section men maybe ran a forge for a little egg money. We are planning to mark the location in the future so that people on the train will know where the section house and Bunk house were located and perhaps the coal dock next to the tank.
Frank