I hope the copy you picked up of MW's Folk Singer was the Original Master Recording, UltradiscII Gold CD,(big difference!!) Another intimate Blues recording is Lightnin' Hopkins's Lightnin' CD or LP both great!
Muddy Waters "Folk Singer"
I recently picked up a copy of Muddy Waters "Folk Singer" thanks to the forum. I could not believe the quality of the recording, not to mention the material from a cd I purchased for $7.95!! What are some of the other "gems" out there that are worth hunting for in blues or jazz and classical as well?