Luckily, lots of this material has become available from Yazoo and others. I recommend everyone who is interested in exploring the ultra-rare pre-war 78 game check out a 2-cd set called "The Stuff that Dreams Are Made Of" and a disc called "Down In Joe Bussard's Basement." They'll make you want to start collecting. (And of course you'll need to start building a dedicated 78 system too!). Also good is an OOP box set (from a major label but I forget which) called "Roots & Blues, the Retrospective 1925-1950."
Here's a link to a great article on Bussard and the records.
http://www.bluesworld.com/Bussard.html
Here's a link to a great article on Bussard and the records.
http://www.bluesworld.com/Bussard.html