Ruth Brown may have recorded it but it was originally recorded by Georgia White in 1936. She is credited with writing it.

I'LL KEEP SITTIN' ON IT - Georgia White

If I can't sell it I'll keep sitting on it
Before I'll give it away
You've got to buy, don't care how much you want it
I mean just what I say
Just feel that nice old bottom built for wear or tear
I really hate to part with such a lovely chair
If I can't sell it I'll keep sitting on it
Before I'll give it away

If I can't sell it I'll keep sitting on it
Before I'll give it away
You've got to buy, don't care how much you want it
I mean just what I say
When you want something good you've got to spend your jack
I guarantee you'll never want your money back
If I can't sell it I'll keep sitting on it
Before I'll give it away