1939 New York World's Fair is considered the big kick off of electronic television . RCA had a huge pavilion showing the wonders of electronic imaging ...broadcasting live ..millions saw television for the first time at the fair.
One of the "programs" was a bit coming to the fair where a model GG1 pulling the Broadway Limited represented transportation to NYC .
Ed Alexander provided the O scale models used by RCA & the Pennsylvania Railroad as one of the earliest uses of miniatures in broadcast.
Alexander introduced his cast bronze GG1 and cast alumuium smooth sided passenger cars on 1937. Cars have operating diaphragms.
For the broadcast Alexander built elaborate cantanary system as seen in the NYC - Phila corridors...sorry this model which can be used with overhead ..only using outside 3rd rail today.
To see train in action please see video link