Piano Duo Groups - Lot of 3 Signed Photos Autographs composers shown as Brünnhilde in Wagner's

shown as Brünnhilde in Wagner's Der Ring des Nibelungen

including a handwritten sheet with numbers and description of these photos (the numbers are written on verso)

American singer (1866-1937)

with the Leningrad Philharmonic Orchestra under the baton of Yevgeny Mravinsky

Schmidt-Isserstedt

Piano Duo Groups - Lot of 3 Signed Photos Autographs composers shown as Brünnhilde in Wagner'sLot of 3 signed photos of piano duos: Katia and Marielle Labeque sisters, card attached s half tone photo, sized 4. 6 x 6. 75 inches; Ethel Bartlett and Rae Robertson, signed photo, inscribed, sized 8 x 10 inches and Guther and Suther Pekinel, signed card attached with a half tone photo, sized 4. 1 x 7. 25 inches; all in excellent condition.