Mahler, Gustav. (1860–1911) THE EARLIEST KNOWN PHOTOGRAPH OF THE COMPOSERAn extremely rare early childhood CDV photograph of the great composer at age 3, shown wearing a checked coat and matching hat and riding a wheeled horse toy. A note on the verso in a contemporary hand reads: "Gustav MahlerIglau 1863." 6 x 10. 2 cm. Scattered ink speckles, central and diagonal creases, including small losses along left edge and to one location within the image. The present photograph predates by two years the first image of the