Removing drivers window on '29 Pickup

[Dkrahn]

I am trying to remove the glass, to replace, on the driver's door of my 1929 Model A pickup. The issue is, getting the glass "out the top of the door". I have 3 screws at the top of the door and that is it. Those 3 screws are on the side / top, where you can see them when the door is open, not up top looking down. The manual just says lift it out thru the top...Those 3 screws, on the window frame are the only thing I can see holding the frame on. The frame goes down both sides, but again I cannot see how that is held on, except those 3 screws.

Appreciate your help
Dean