[Opera] Portraits of Gluck, Rimsky-Korsakow, Mussorgsky and Wagner Signed by Many!Four printed portraits of composers, two with associated postage stamps, issued 1936 1955 by Hall & McCreary, signed in various inks by singers and conductors associated with their operatic works. Rimsky Korsakow, signed by Berverly Sills, Igor Gorin, Norman Treigle and Justino Diaz; Richard Wagner, signed by Eileen Farrel, Erich Leinsdorf, Rose Bampton, James King, Ingrid Bjoner, John Smith and others; Modest Mussorgsky, signed by Igor Gorin, Norman