Effective period / Period of releases: 1945 - 1979

American operatic mezzo-soprano, voice teacher, actress, and opera director.
Born September 19, 1915 Monessen, Pennsylvania Died March 23, 2010 San Francisco, California.
She was part of the first wave of American opera singers that had highly successful international careers. In her own country she had a long association with the Metropolitan Opera in New York City which lasted 22 years.