Autograph letter to the noted Columbian musicologist, Otto de Greiff (1903–1995) from the American pianist and harpsichordist who was particularly associated with the music of Johann Sebastian Bach. 2 pages, quarto. Reading, PA. July, 1938. Tureck writes concerning a possible tour to South America, playing Bach and Brahms with the Budapest String Quartet, and encloses an autographed broadside containing reviews of her 1937 Bach Recital Series performance in New York, also inscribed to de Greiff and dated July 14, 1938. With holograph envelope and an attractive early signed broadside mentioned in the letter. Letter 7 x 9 inches (18 x 23 cm). In fine condition overall.