Run, don't walk, to your nearest bookstore and buy a copy of the Jan/Feb issue of Performing Songwriter with Don on the cover. Here is a preview:
http://www.performingsongwriter.com/...e/main_top.cfm
It contains an insightful seven-page interview with him with a number of fantastic photographs scattered throughout the magazine, not only of Don and the Eagles but their close friends as well. The back page of the magazine includes a 1972 shot by Henry Diltz of J. D. Souther and Jackson Browne from the famous Desperado shoot. J. D. also reveals the backstory behind "How Long." An excerpt: "I'm always happy when they cut anything of mine. Nobody makes better records of my songs."
I enjoyed the entire interview with Don, especially his answer to the following:
"What advice would you give to young artists who look up to you in the way that you looked up to your heroes?"
His answer, in part: "Avoid the limelight unless it is absolutely necessary for you to be in it in order to call attention to your work--and don't overexpose yourself.
In the end, the quality of your work--your songs, your recordings, your live performances--is the only thing that matters.
Be kind, be grateful, be patient. And above all, try to keep your sense of humour.
It can get mighty cold and windy at the top of the mountain, but the view up there is really fantastic."
First-rate stuff. I loved it!