I read this entire thread and found it very infomative.
Keith, that photo of your 75 is outstanding as well as Mike's pics of his On3 locos. There's lots of detail I can incorporate into my own locos. They aren't brass, but I think they can be modified to fit the prototype at a distance. Those pics make me drool.
Fred
Superintendent
C&S Kebler pass Subdivision
The Kebler Pass Route