Ted Staunton's archive of labels from 78 rpm records. Perhaps most easily explored through the massive "Decades" pages of thumbnails.
For your weekend aural edification, courtesy of Internet Archive, a sampling of Old-Time and country blues gems: Buell Kazee's The Dying Soldier (1928), B.F. Shelton's Pretty Polly (1927), Geeshie Wiley's Last Kind Words (1930), Dock Boggs' Danville Girl, Kelly Harrel's Rovin' Gambler (1925), Clarence Ashley's My Sweet Farm Girl (1931), Charlie Poole's Don't Let Your Deal Go Down Blues (1925) and the Memphis Jug Band's A Black Woman is Like a Black Snake (1928).
Dreams and Songs of the Noble Old, a film by Alan Lomax, takes a loving look at the talents and wisdom of elderly musicians, singers, and story-tellers from southern American folk traditions. All the musicians featured in the film have soul and musical energy to spare: great, great performances and engaging reminiscences make this film a real treat. Please see the [more inside] for a collection of links to several of the outstanding performers featured in the film. [more inside]
For murder ballads, here's your Mississippi John Hurt's Louis Collins and your Grayson & Whitter's Ommie Wise. Then, for some early white blues bottleneck guitar, here's your Frank Hutchison's K. C. Blues. Not to mention Charley Patton's Screamin' And Hollerin' The Blues. All courtesy the Internet Archives 78 RPM tag. where there is way more--like Bix Beiderbecke's first record, Davenport Blues, Louis Armstrong's Ain't Misbehavin' and Geeshie Wiley's Last Kind Words, among many others. Then, for more, Nugrape Records has an mp3 page. The standout there, at least for me, is Gus Cannon's Poor Boy Long Ways From Home. As for their namesake, the Nugrape Twins, well, the Archive has the mp3 of I've Got Your Ice Cold Nugrape. And don't let me omit mentioning PublicDomain4U. They have Mississippi John Hurt's Frankie, for one. Tyrone's Record and Phonograph Links will lead you to more 78 RPM goodness. And don't forget the inestimable and erudite vacapinta first directed us to Dismuke's Virtual Talking Machine.