Hi Linda.. I worked in the AM studio in 1974, and there were, generally, filming of some sort going on > I worked with the org. from the late 50s, in several locations, and can assure you ,filming of Medal balls etc, were always done. How to locate them ? that's a difficult question..
Just had a thought.. Contact Pat Traymore and Frank Regan, both are still active with AM, and Pat did many of the AM B/room TV shows with Terry Leone ( with whom I worked for a short period ).