While we were in Madrid I managed to read Neville Judd's biography of Al Stewart, which arrived from Amazon not long ago. Judd isn't a brilliant writer, but he had Al Stewart's cooperation and access to his family, friends, and associates, and I think he's made a good job of the book, which even has a useful-looking index. A pity about the rather silly-looking late-1960s cover photo; the man doesn't photograph well, but I think some better photograph could have been found, perhaps from his peak period of around 1977.
I'm certainly not Al Stewart's greatest fan, but I have most of his albums and I've been listening to his music for about 35 years, so it's interesting to find out more about his private and professional lives, and more background information about the songs than I knew already.