Hehe, yeah. And he's old. On both genetic sides, there's plenty of evidence of, shall we say... "troubles". One side is big into denial... "Everything's just peachy Norman Rockwell-esque here!" And the other, to which he belongs, is more, shall we say... accepting of the human condition. Not dx'd or admitting even, but accepting. It's so good that you sensed this from him! Yay indeed! I'm sure the right opportunity will present itself to you.
One book that I like (not just borrowed from the library and read, but actually *own*) is Bipolar for Dummies (Candida Fink MD and Joe Kraynak). Something about its tone is just more readable and... I don't know, just a bit better sense of humor... not quite as clinical and more understanding and less detached in tone than many. Maybe you can check it out of your local library and see what you think. Wishing you the best of luck!