The only fretted chords in this classic Son House bottleneck blues are barres with a 7th added on the high string.
Links:
[1] http://www.adrianfreed.com/category/affinity-group/blues
[2] http://www.adrianfreed.com/category/affinity-group/guitar
[3] http://www.adrianfreed.com/taxonomy/term/147