AARPCO just finished their annual convention in Burlington, VT. There were AARPCO members cars on a few Amtrak trains that gathered in Albany, NY to be forwarded as a special train to the VERMONT RY. Think they had about 13 cars. Convention is over now and the private AARPCO cars are going home from Albany, NY.
Check AARPCO website for more info and maybe photos too.
Walter M. Matuch