This is a great compilation of some of the best 50's post-Depression blues records, so there ain't any of the very early blues records included here, and no Robert Johnson, despite of beeing named on the cover. The liner notes from Michael Heatley are brief but informative.
There is one serious issue to this compilation however. I noticed some of the typical MP3 artefacts on one of the first tracks of CD 2 and according to a quick analysis of the waveforms at least some of the tracks from the second disc are sourced from MP3s. So be aware of that.