San Francisco-based record label Tompkins Square is unveiling a series of releases in the 78 rpm 10" vinyl format. One of the first to be released will include previously unreleased recordings from Luther and Ralph Stanley. Both 78's will be released as a limited edition of 500 copies on Record Store Day, April 21, 2012.

Hear Luther's recording of Nobody Knows The Trouble I've Seen / Peace in the Valley

Get more details on the Tompkins Square 78rpm vinyl series at