Heatstroke, where in the OP did you read that? And where did you read that Hendrix has a ukulele since he was 5?
Greyhawk, my error. It's nice how you assume I didn't look it up myself to behold no results.
Gelfand, D.E.: Jimi Hendrix: Musician. Infobase Publishing, ISBN 0-7910-9214-3, 2006
And you're right. I was wrong. He wasn't five. He was four.
Also Phinneas's idea is great. If I were young enough to be a student, this would be a place to go to.