Callas, Maria. (1923–1977). Signed Photograph in La Sonnambula. Signed photograph of the legendary diva, who is shown in costume for La Sonnambula at La Scala. Photographed by E. Piccagliani for La Scala and captioned at the foot, dated 1956–1957. Very fine. 4 x 5.75 inches (10.5 x 14.8 cm).