Opera Singers - Lot of +150 Unsigned Photo Postcards [BALLET] letter is 6

letter is 6

whose career developed during the early 1900s

particularly centered on the Metropolitan Opera from the late 1960s to the late 2010s

signed by her and conductor Schmidt-Gertenbach on the cover

with Paul Frenkel at the piano

Opera Singers - Lot of +150 Unsigned Photo Postcards [BALLET] letter is 6A 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