Help needed 50 chevy truck windows

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Hi, I have a 1950 3 window truck,the windows were all apart when I got it, I need a picture or diagram of how to assemble the door window, mostly how the regulator is connected to the bottom of the window. There are 3 roller looking things on the end of the arm and I don't know where they go, also on the bottem of the window frame(where the glass is held in) there are nuts welded on, is there a channel that the rollers run in? And where can I find some? I have been looking online but have come up empty.