Here's a good site about Elizabeth Cotton, with lots of good stuff.

What's supposed to be wrong with the Seeger's giving Elizabeth a job helping run their household? Is the idea that if you give someone a job in an office that's OK, but if you give them a job in your own home, that's demeaning?

The story is she was working in a shop and she found Peggy Seeger lost and crying and looked after her till her mother was contacted, and after that they found they all liked each other, so the family offered her a job. And then she got back into playing music after 25 years not doing so, and the younger Seegers helped her get the attention and recoignition she deserved.

As for whether it was Pete Seeger's home, he was born in 1919, Elizabeth came to work in 1947. My son's older than thta, and he's got his own place - but this is his home too. (Home is "where, when you go there, they have to let you in").