33 Courtesy of The Wellcome Trust, London
41 Courtesy of Cambridge University Library Cambridge, England
56 Courtesy of Stewart Pollens
120 Courtesy of The Metropolitan Museum of Art, The Crosby Brown Collection, 1901
156 Courtesy of The Wellcome Trust, London
184 Courtesy of The Metropolitan Museum of Art, The Crosby Brown Collection, 1901 (01.2.4)
211 Courtesy of The Metropolitan Museum of Art, The Crosby Brown Collection, 1901
212 From Alfred Dolge, Pianos and their Makers (Covina, Calif.: Covina Publishing Company), 1911
213 Courtesy of Stewart Pollens
224 Courtesy of The Metropolitan Museum of Art, The Crosby Brown Collection, 1901 (01.2.87)
228 Courtesy of Steinway & Sons, Long Island City New York