As a young music journalist in 1975, Stephen Davis got the opportunity of a lifetime: an invitation to cover the sold-out 1975 North American tour of Led Zeppelin for a national magazine. He received a backstage pass, was granted interviews with band members, and even got a prized seat on the band's luxurious tour jet, The Starship. While on duty, he chronicled the Zeppelin tour in three notebooks, but after writing his article in 1975 he misplaced them....