Like Bill says. Compound curves in all the rear glass, and the tailgate glass has a kind of notch at the upper corners. I have a pair of quarter windows but no tailgate glass. The only wagon near here in a yard is gone now, so I can't grab that for you. You might try Ted Stephens or Joe Suchy for glass or leads to some, or in the West, try Wildcat in Sandy, OR. Weatherstrips/seals for the quarter & gate glass are available from restorationspecialties.com if you need them.