I did scan some backdrops and overlays of these things a while back. Here's a link in case they're useful:
https://www.dropbox.com/sh/p3dv2vovpbb786k/AADOyFnkr-qbRo5zEDBokAOJa?dl=0

Sorry about the dust specks, but the films attracted dust quicker than I could wipe it off...