Does anyone know of a video that shows how to remove & replace the rear side glass on a 1955 olds 2 door hardtop?

 

I've not done a '55 Olds, but I've done a '56 Chevy. They are all pretty much the same. Remove the inside trim panel, and any access panels. Crank the window up & down until you see the screws that hold the glass assembly to the track assembly. Unscrew the glass assembly, and snake it out through the opening. It might require removing some stainless trim, or stoppers to be able to get it out, but that's how they go in.