I found an interesting site on Adele Marcus (d.1995) while investigating Jeffrey Biegel. Though certainly known more for her pedagogy than her performing, she was a fine player, though I remember hearing that for most of her last decades, she prefered to perform with score. The site has several mp3 recordings for listening. They sound very dated in quality but have some interesting things. I found it peculiar how she starts the Rach Concerto 2.