Murray,
I have two non-blues-style versions of the first tune you mention: A Rockabilly version of 'Sittin on top of the world' is on Sleepy LaBeef's nifty recording on Rounder, 'Strange Things Happening,' and there is a bluegrass version on the Nitty Gritty Dirt Band's Circle II (Will the Circle Be Unbroken, vol 2, on Universal) Bela Fleck plays banjo, Jerry Douglas on dobro, Vassar Clements on fiddle, and others.
Seems like there is a Rory Block record (also on Rounder) on which she sings 'Come on in my kitchen,' but I think my ex has it. I know I've heard her do it live.
Nora