Coronation Street 1970s Spectrum

With thanks to John at http://coronationstreet.wikia.com/ for sending this to me. It's a 1972 edition of the Ulster Television arts programme "Spectrum" which features long and fascinating interviews with Doris Speed, Violet Carson, William Roache, Peter Adamson and, from the production side, Harry Kershaw and two unidentified writers who John suspects are Susan Pleat and Malcolm Lynch .