There's a good few things of Almeda at the Max Hunter site as well. They have hundreds of songs from Ollie Gilbert, who also recites some biblical verse to show what a prime steel trap memory she has!

There's a very nice songbook, Folk Songs Out of Wisconsin, you can get used at a reasonable price. Also a CD, Folk Songs from Wisconsin I think it's called. An Amazon reviewer castigated it as Anglo-centric, Wisconsin is 50% German ancestry I believe. Still a terrific recording, from the same 1940s field recordings they use at the website.