Just recently, for a few quid, which seems reprehensible, SINATRA: AN INTIMATE PORTRAIT OF A VERY GOOD YEAR, by Life photog JOhn Dominis. Even if you aren't a great Sinatra fan (I'm not) this virtuoso B&W fly-on-the-wall account of Sinatra at the height of his business and entertainment success in 1965 will knock your socks off. The printing is magnificent, the editing scrupulous and intelligent, and the additional commentary brief and to the point (always adding context and background).
And you can pick up used and reseller copies for just a few quid. Wonderful.