If anyone uses pandora.com, I can highly recommend this station, which apparently uses Paramount recordings as a basis: Paramount Recordings made in Grafton WI 1929-1932. Station-crafter Jim Vandrisse looks to have some other blues and prewar stations as well.
The Paramount station is supposed to become narrower and more focussed over time. In contrast, I just made a broader station Acoustic Blues. I added most of the connections I could find at Pandora that were on the artist connection list here. Great resource, thanks! :)
I left off a couple (like, Muddy Waters and John Lee Hooker) that made an acoustic> electric transition in their career and so would skew the station. Feel free to let me know if I can make corrections or additions based on what you see in the seeds.
Pandora early blues pointer