[Mahler, Gustav. (1860–1911)] Mahler, Alma. (1879–1964). Signed Document Regarding Copyright to Mahler's Seventh Symphony. An original signed document from the Viennese composer and socialite, wife of Gustav Mahler, regarding the expired copyright to her husband's Seventh Symphony. The short typed document declares Alma Mahler's consent for the expired copyright to the work to be renewed by the publishers, Ed. Bote & G. Bock of Berlin, and for the rights to the work to be set according to the two parties' previous agreement. She has signed boldly at the foot in purple ink. Stamped with the date at the upper left: April 26, 1937. Folds, paper clip mark in the upper left corner, else very good. 8.25 x 11.75 inches (21 x 29.7 cm).