Thanks for all the suggestions everyone.
I have a list and am going to try to get as much as I can without spending a fortune.
I think you have a really good start here. What about Big Mama (can't remember the last name - Thornton?).
I wanted to build up my Blues collection as well. Last year I got a couple mixed CDs so I could sort out who I liked and who I could pass up. I haven't gotten very far, but I got some Muddy Waters and some Etta James among others.
I picked up Martin Scorsese presents The Best of the Blues. That is a great compilation cd. Here is the song list for it.
Just Won't Burn - Susan Tedeschi
Am I Wrong? - Keb' Mo'
Pride & Joy - Stevie Ray Vaughan & Double Trouble
One Way Out - The Allman Brothers Band (live)
Red House - The Jimi Hendrix Experience
One Good Man - Janis Joplin
All Your Love - John Mayall & The Bluesbreakers/Eric Clapton
Thrill Is Gone, The - B.B. King
I'd Rather Go Blind - Etta James
Hard Times (No One Knows Better Than I) - Ray Charles
Death Letter Blues - Son House
Boom Boom - John Lee Hooker
Hoochie Coochie Man, (I'm Your) - Muddy Waters
Evil (Is Going On) - Howlin' Wolf
Devil Got My Woman - Skip James
Muddy Water (A Mississippi Moan) - Bessie Smith
Cross Road Blues - Robert Johnson
Voodoo Music - Los Lobos
Vietnam Blues - Cassandra Wilson
Round & Round - Bonnie Raitt
I Pity The Fool - Robert Cray/Shemeika Copeland (live)
A little bit of everything on this one.