HINDEMITH, Paul. Group of 3 ALS by Paul Hindemith, one postcard and one printed condolence by Gertrud Hindemith to Lazzaro Uzielli, including: ALS, Frankfurt, 2 Jan. 1920. 1 page, 4o. Hindemith is giving advice on musical production and strongly recommends Schönberg's Theory of Harmony. The book "...is most of the time as exciting as a mystery novel and is very inspiring." -- ALS, Frankfurt, 8 Dec. 1920. 1 page. 4o. Hindemith regrets that because of difficulties with Rebner he will not continue to work in Frankfurt. (Torn in four quarters and with old repair). -- Gardano (Lago di Garda), 9 April 1925. 2pp., 4o. On Uzielli's musical development and a ½-page report on Hindemith's activities and his tour of Italy with the Quartet. (5)