Linda McCartney's Sixties: Portrait of an Era is a book by Linda McCartney which presents a number of selected photographic portraits of rock legends. Linda McCartney's Sixties: Portrait of an Era continues to be the most famous work by McCartney. The text was written from interviews with Linda by Steve Turner who would go on to write 'A Hard Day's Write: The Stories Behind Every Beatles' Song' and 'The Gospel According to the Beatles.'