Late to the party and just catching up ...
Babe, I'm Gonna Leave You
... was actually written by Anne Bredon who didn't record her version. Janet Smith heard it played live over the radio and developed her own version which Joan Baez got wind of.
Here's another cover:
When The Levee Breaks
Um, Led Zeppelin kind of needs their own
thread for covers. They were infamous for taking a lot of songs and claiming them as originals. The original When The Levee Breaks was done by Memphis Minnie with her husband Kansas Joe McCoy
Dazed and Confused
Jimmy Page stole this one from Jake Holmes while Jimmy was still playing for the Yardbirds.
Summertime
From the guys who did Sleep Walk, the Santo & Johnny version:
