Folk Singer Just Notices That Led Zeppelin May Have Copied His Song Forty Years Ago

This is not new at all as it's been known since the Yardbirds covered the song before coming to be known as Led Zeppelin. A 2001' article (Shindig magazine) is just one example a decade ago suggesting what was commonly known.

http://lib.store.yahoo.net/lib/itsaboutmusic/jakeholmes.pdf

Ask Willie Dixon about the origins of Whole Lotta Love? And there are questions even about the origins of Stairway to Heaven. State priviledge of copyright argument aside, Holmes may have an uphill battle on his hands