I have 2 sets of 5 Pennsylvania passenger cars that the names of Madison, Manhattan, Irvington, Uniontown and Baggage are on the sides.  One set appears the same as the Williams cars with Madison #2626, Irvington #2622, Uniontown #2621, etc.  They are what I call a tuscan red color.  The other set is green and does not have the numbers.
I cannot find any information on the green cars.  Are they Williams?  Does anyone have information?
THANKS FOR YOUR HELP!!

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