Harry Bertoia’s vast output of work spanned everything from sculpture to drawing; jewellery to his “sound sculptures”, as well as his famous Diamond chair. To mark the centenary of his birth, Knoll’s celebrations include the reissue of his plastic side chair. We were fortunate to be able to speak to Harry’s daughter, Celia, to find out more about his art and designs and relationship with Knoll, as well as discussing the legacy of his work.