The Internet Archive has 75 Broonzy songs at https://archive.org/details/BillBroonzy-01-75 and 100 songs (most of which are also at the former link) at https://archive.org/details/BigBillBroonzy-01-100 for any Mudcatters who want to take the previous advice of Art Thieme on this thread (from 12 years ago!) and "search out and listen to and marvel at the recordings of people like Big Bill Broonzy."

Also, the Alvins (whom I mentioned a couple of posts previous) went to the Old Town School of Folk Music in Chicago that Art mentioned and got to play Broonzy's guitar, which is kept there. You can see a video of it at http://youtu.be/aQDHdJVVvgw and hear Dave remark, "It's like holding Big Joe Turner's voice."