Tana Douglas had just lit her second cigarette, 30 or so minutes into a conversation with George Harrison, when the former Beatle said: “I would marry you tomorrow if you gave up smoking.” It was 1979 and the two were hiding out in the kitchen at a party hosted by Harrison’s neighbor Jon Lord, keyboardist for the heavy metal band Whitesnake. In the living room, a stripper — a birthday present to Harrison that embarrassed him — danced to the Beatles’ “She Loves You.” Douglas was the only woman there who wasn’t a stripper. The first female roadie in rock...