One of the first (number unkown) narrowguage Pullman sleeping cars - ex D&RG - then Uintah, is storred in a back shed at Cross Orchards Living history farm in Grand Junction, Colorado. ALso located there is the "Last" Uintah caboose - #3.
One of two of the FIRST & LAST rectangle steel water cars built by the Uintah is at Silverton, Colorado - the other has dissapeared off my radar - sold?
The First ( and maybe the only??? ) steel sheathed narrow guage passenger cars in the USA is at the the Colorado RR Museum - Uintah #50.