One of the best flattop fingerpickers to ever learn to play a guitar Mr Doc Watson. Blind from a young age Doc didn't let that stop him from becoming a guitarist a very well awarded guitar picker and singer.
Preserved in the Smithsonian Institution is pretty big stuff.
Arthel Lane "Doc" Watson was an American guitarist, songwriter, and singer of bluegrass, folk, country, blues, and gospel music. Watson won seven Grammy awards as well as a Grammy Lifetime Achievement Award.