I may be alone in being slow to pick up on this, but in 2010 there appear to have been four softback books of Mick Rock's photographs issued. Each one was about 7 inches square and issued in a tin with a relevant 7-inch vinyl single.
I mention this only because the one titled Glam! (the other three being devoted to Bowie, Syd Barrett & Iggy Pop) features Roxy heavily.
The picture on the tin seems to be the same one used for The Bryan Ferry Story by Rex Balfour (Simon Puxley's pseudonym, wasn't it?) and there are some beautiful 1970s photos of BF, Roxy & Eno in the book. Oh, and the 45rpm single is Virginia Plain b/w The Numberer on clear vinyl.
I found this by chance in a Swedish mail order site for the equivalent of a tenner plus postage, but subsequently bought it sealed from an Amazon seller for half that. I've seen it priced at £20-£30 elsewhere, though.
I can post the ISBN number here if anyone needs it. Likewise, if anyone draws a blank in the UK, I could try Sweden when I next order some CDs (the shipping for the book on its own would be prohibitive and double its price to about £20), as splitting the shipping cost might help.