Conservator David Cann of Moorland Studios in New Jersey discusses the cleaning and treatment of Alexander Calder's William Penn, one Philadelphia's most beloved landmarks.By Susan Lewis
http://stream.publicbroadcasting.net/production/mp3/national/local-national-1002754.mp3
Conservator David Cann of Moorland Studios in New Jersey discusses the cleaning and treatment of Alexander Calder's William Penn, one Philadelphia's most beloved landmarks.