As the longest-running children's show in TV history, Blue Peter has been a cultural touchstone and rites of passage for youngsters in Britain for as long as any of us can remember.
Imagine the excitement then in 1973 - when the iconic BBC show was at the peak of its powers - when Blue Peter ventured north of the border to capture the best of the city's sights and attractions during the Edinburgh Festival.
Reporting from Auld Reekie that August was legendary Blue Peter presenter Valerie Singleton, who still filmed special assignments for the show despite no longer being a regular host since 1972.
