Once in a while a photographer gains the trust of an artist or a band, and his work fuses with that of the artist in such a way that the two become married in the public consciousness. One can think of David Duncan's pictures of Picasso at work or Alfred Wertheimer's pictures of Elvis backstage in 1956. Elliott Landy's chronicle of The Band from 1968-1969 is of similar importance. He was trusted so deeply that this group of photographs is as intimate...