In the 1970 movie called The Out-Of-Towners (with Jack Lemmon), one could see several scenes of vintage Marbelite LPS-20 pedestrian signals in operation.
This also includes three-section and even two-section Marbelite traffic signals. Some really interesting scenes.
What could also be observed in some scenes from the movie is the installation of mast-arm poles. That is, mast-arm poles for traffic signals, of course.