1619. WALTER PISTON (1894-1976) American composer who taught at Harvard for many years, and the author of several influential texts on musical technique. Vintage 8" x 7" b/w, showing Piston at work at the piano, boldly signed at lower left adding date May 24, 1944. Along with a brief A.L.S. on Harvard stationery sending the photo. Both pieces are in fine condition. $50-75