Wolff, Hellmuth (Sylvio Gustav)
- Karl J. Raudsepp
(bZürich, Sept 3, 1937; dNovember 20, 2013). Canadian organ builder of Swiss birth. He was apprenticed to Metzler & Söhne, and received further training with several firms in Europe and the USA, including Rieger in Austria and Charles Fisk in Gloucester, Massachusetts. In ...