IRM's 1630's original "auxiliary" tender. Well, not quite...
While we did carry water in the milk cars tanks, it wasn't plumbed to to 1630's tender. Instead the was a small gasoline pump in the car and we could connect a hose and run it to the water hatch while in the depot.
We never did need it when the mainline ended at Seeman Road. 1630 now has a more "appropriate" aux tender.
Rusty