I first thought this was an Elesco feedwater heater that shows up in photos of the Great Western's 1937 (last steamer they
bought) Alco 2-8-0 #60. I had a brass casting for this, and then I flipped through both books and a pamphlet on the RR,
and think it looks more like one of those long tanks commonly suspended under running boards, toward the front on either
side of steamers, but this one sits sideways on the pilot plate under the overhanging smokebox. Is that an air tank, or what? (I flipped through a Locomotive Cyclopedia, but while it covers a lot of steam loco components, and feed water heaters, I don't see anything like these tanks)
