The locomotive has Southern valve gear, which necessitated (because of a lack of space) that the air reservoirs be placed atop the boiler. This is a parallel situation to the 1500’s and 4100’s, some of which had their reservoirs located atop the boiler, albeit forward of the steam dome.
This was taken in Memphis, TN by R. J. Foster.
Seems like a most peculiar location for the air reservoirs, or at least a unique location for any Frisco steam power that I can recall seeing.
The locomotive has Southern valve gear, which necessitated (because of a lack of space) that the air reservoirs be placed atop the boiler. This is a parallel situation to the 1500’s and 4100’s, some of which had their reservoirs located atop the boiler, albeit forward of the steam dome.