Amos Garrett was one of the first "really good pickers" that I ever saw up close. Like Knoffler he just has a "touch". Love his playing.The guitarist (forget his name) with Gerry Rafferty on "The Ark". Great solo.
George Harrison's slide guitar on "My Sweet Lord". Verrry nice.
Alton Delmore's flatpick break on "Blue Railroad Train". Lots of unexpected turns.
Leadbelly's run from D to A on many things. Inventive!
Rick