Anna Muthesius (nee Trippenbach, known as ‘Muthesia’) up her career as a singer on her marriage to Hermann Muthesius. He consulted her on color, furniture and design.
Kruse, Margret. Kunstphotographie Um 1900: D. Sammlung Ernst Juhl; Hamburg: Museum für Kunst u. Gewerbe, 1989 pl. 22