Here in the Washington, Dc area, Eva Cassiday is well known, but she may not be elsewhere. Her live CD, "At Blues Alley" is easily the best female vocal recording I've got, even though it does not have the "Over the rainbow" cut that got played on BBC. This became a hit in England, 6 years after her death, and sparked a revival of interest in her music.
Highly recommended.
Highly recommended.