Take a look at the "Otis Coal Company" by Woodland Scenics. http://www.woodlandscenics.com/ DP.
For some more info check http://www.hon30.org/ Dave
For the Shay Get a copy of Jeff Johnston's MDC Shay Handbook. This is a great book of you are building or adding to the shay. Dave
Go to www.smallparts.com/ they also have all the fittings you might need Dave