Mrs. Scherer and the students visited David Duff, who has been producing architectural art glass with Classical Glass for the past 34 years. He studied under Roger Darricarier in Chartes, France. He has also executed commissions for private collections in Paris, Aaman, Jordan and Seoul. The Cincinnati Art Museum frequently uses David for repairs as well as referring other clients. David currently works at Classical Glass and does many stained glass projects for the Cincinnati area.