The tender superstructure in your photos was originally behind Loco #70 (see attachments). After #70 was reassigned a Class 190 tender, the old tender was reassigned to Rotary #1 from 1950 to 1953, and to Loco #190 from 1953 to 1960. It was shipped out of Skagway, apparently in 1979.
Loco #71 had a similar tender, but the #71 tender superstructure was assigned to Rotary #2 in 1951, and to Loco #192 from 1953 to 1977. Then, the #71 superstructure was was re-mated to Loco #71 when it was sold to Silver Dollar City in 1977. That superstructure was scrapped between 1986 & 1999.by Dollywood.