USA trains is 1:29 scale
Aristo Craft is 1:29 scale also, but their ex Delton line is 1:24 +/-
LGB is basically 1:22.5
MDC used to have some 1:32, but I haven't heard much about them recently
Marklin has some 1:32 but I have not seen a rolling stock advertisement for
them recently.
If you close one eye (preferably the 'good' one) the 1:29 doesn't look tooo
bad.
My string of USA wood sided beer cars looks pretty nice rolling around the
track in the early morning fog and low angle light.
Keep your steam up!
Mr. Lunkenheimer & Walt