Opera Singers - Lot of +150 Unsigned Photo Postcards [BALLET] inscribed and dated by him

inscribed and dated by him in 1897

Cowell signed and inscribed this score over the top right corner of the front cover

whose career developed during the early 1900s

with Paul Frenkel at the piano

shown as Isabeau in Mascagni's Opera

Opera Singers - Lot of +150 Unsigned Photo Postcards [BALLET] inscribed and dated by himA beautiful collection of +150 unsigned photo postcards of different opera singers. Each one's size is 3. 4 x 5. 24 inches approximately, in excellent condition. Artists include Maria Jeritza, Richard Mayr, Hans Duhan, Alfred Piccaver, Berta Kiurina, Karl Ziegler, Erik Schmedes, Josef Schwarz, Serge Jaroff, Michael Bohnen, Anna Bahr Mildenburg, Alexander Nosalewicz, Leo Slezak, Lotte Lehmann, Rudolf Hofbauer, Melitta Heim, Fritz Weidemann, Franz