When all else fails, read the...uh, do a search. I found Funaro, etc. of Honesdale, Pa.
on their website, with O scale covered hoppers and one lonely NYC gon. Didn't seem
too pricey, just limited, but their, mostly east coast, HO kits are expensive. Not HO
priced as I remember it in a Woolco discount store blowout way back when.....
