Wilk, Christopher. Thonet: 150 Years of Furniture, Woodbury, New York, 1980, p. 74, fig. 85 (ill. this model chair in 1911 Thonet catalogue). p. 75, fig. 86 (illus. chair's leg brace as No. 27 in the 1911 Thonet catalogue) p. 80 (discusses the invention of leg brace No.27 specifically for the American market)Mang, Karl. Thonet Bugholzmobel, Wien 1982, p. 62 (illus. chair's trade label).Candilis, G. et al. Bugholzmobel, Stuttgart, 1979, p. 183 (illus. in Thone'ts 1911-15 catalogue as No. 398).