What you see now is just an outline, I will add more artists and additional details about each.
Rev Gary Davis
Gary Davis was a powerful vocalist and a masterful guitar player. He
wrote Death Don't Have No Mercy and recorded a version of
Samson and Delilah. He is probably the Dead's source for both
these songs and is rumored to have given Bob Weir guitar lessons.
Blind Willie Johnson
Willie Johnson is credited with one of the earliest recordings of
Samson and Delilah, entitled If I Had My Way. He also
recorded Nobody's Fault But Mine as well as Keep Your Lamps
Trimmed And Burning.
Lightnin' Hopkins
Lightnin' Hopkins wrote Katie Mae and Ain't It Crazy,
sometimes refered to as The Rub, both of which were sung by
Pigpen in the early days.
Howlin' Wolf
Chester Burnett, aka Howlin' Wolf, made famous many of the classic
blues tunes penned by Willie Dixon. He recorded Little Red Rooster,
Smokestack Lightning, Spoonful and Wang Dang Doodle.
Willie Dixon
Willie Dixon is the author of Little Red Rooster, The Same
Thing, Spoonful, Wang Dang Doodle and I Just Want To Make Love
To You. Willie also co-wrote Eternity with Bob Weir.
The Stanley Brothers
Ralph and Carter Stanley wrote and recorded many songs
performed by Garcia, both with the Dead and
solo. Included are (Cold) Jordan, White Dove, Pig In A Pin,
Little Glass Of Wine and The Fields Have Turned Brown.