Need help IDing this steamer

[Guest]

Thanks Dave & company for all your help, that gets me a little closer....Now that I look more carefully at the photo I see the engineers seat on the steamer itself which now suggests to me that this was at one time a horsedrawn unit. It was never horsedrawn in York as I can find no evidence of any horses being utilized in our FD. I couldn't find any information in the town reports of the time about a purchase of any such unit which leads me to belive that the rig was bought by the fire department "corporation"  (our term for firemen's association) Also, in the lower right corner of the photo it is printed "York Fire Dept" "Combination" I guess that means combination of steamer and self-propelled tractor?? I have heard the term combination used but always thought it meant combination pump and hose car or combination chemical and hose....etc......Anything else that anybody may be able to contribute is more than welcome!!!!!