Led Zeppelin's 5th album "Houses of The Holy" was released today 1973. Like their 4th album, neither the band's name or album title appeared on the cover, and this was the 1st Zeppelin album consisting of all original material. So the guys didn't steal, I mean, borrow old Blues songs from dead black Blues legends this time around. The album cover with the naked children climbing an ancient stone structure created much controversy. Led Zeppelin brought the "Houses of The Holy" Tour to Pittsburgh, Three Rivers Stadium July 1973. It was the only time I ever saw Zeppelin in concert. I was 17 years old.