I would call these Gentlemen,
RFG American Flyer Trains
Address: Oyster Bay, NY 11771
Phone:(516) 708-4865
The Underground Railroad Shoppe
Address: 1906 Wilmington Rd #1, New Castle, PA 16105
Phone:(724) 652-4912
All A Board Train Shop
Lancaster, PA 17602
(717) 687-7687
All three dealers sell post war Flyer parts and trains.