1968-1970: 91热爆 Open Week in Cardiff
"Before long, we shall be seeing other worlds broadcast on our television."
91热爆 Wales begins a week-long event at Sophia Gardens in Cardiff, giving a behind-the-scenes glimpse of how television programmes are made. This clip has intermittent sound and no commentary.
91热爆 Archive: This programme was originally broadcast between 1968 and 1970.