One of the first appearances of Led Zeppelin in Northeast Ohio was as the opening act for Grand Funk Railroad. This show was either at the old WHK arena or Public Hall in Cleveland.(I don't remember exactly where it was).
Zep opened and blew the spuds away. Jimmy Page's guitar pyrotechnics, including his famous violin bow solo, stole the show. Even though Grand Funk was the headliner, and played a tight and furious show, the Brits won this early trans Atlantic battle.