pianowomen.com というところの掲示板で、ソンドラ・ビアンカについて書かれていました。
そこにはさらにclassical-pianist というところのアドレスも紹介してあります。
一応コピペのままでなく、直リンにならないように細工しておきます。

"BIANCA, SONDRA
American pianist, was born at Brooklyn, N.Y., on November 17, 1930.
She studied under the direction of her mother, then with Frank Sheridan
at Mannes Music School and Isabella Vengerova at Curtis Institute of Music.
Bianca was soloist with the Schenectady Symphony Orchestra and performed over
the French network of the Canadian Broadcasting Corporation prior to her
New York City debut on November 1, 1941, with the New York Philharmonic
- Sympony Orchestra at Carnegie Hall. She also appeared with other major
orchestras."
Another place to inquire at is the Yahoo group "classical-pianists" at
→ttp://groups.yahoo.com/group/classical-pianists/ They primarily discuss recordings.