If you don't know Peter Guralnick, it's about time you did, because he's arguable the most articulate, serious chronicler of modern American music in the past 50 years: with a two-volume biography of Elvis Presley, as well as book-length bios of Sam Cooke and Sam Phillips, not to mention three other collections of profiles of many famous and not-so-famous blues, country, and early rock musicians.
I've never met Guralnick, even though I lived for awhile in Newburyport, MA, only a few miles from his home in West Newbury, and share a mutual friend in blues record producer Dick Shurman. But I did quote extensively from his profile of Bobby Bland from his Lost Highways: Journeys and Arrivals of American Musicians, in my book-length biography of "the world's greatest blues singer": Soul of the Man: Bobby "Blue" Bland. Check it out.