I just received my 2012 copy of Golf Rules Illustrated. Looks like a pretty awesome book, but the illustrations are hilarious. They remind me of the old Goofus and Gallant comic from the Highlights magazine.
"May I make a quick stop at the clubhouse at the turn?"
"Since this is stroke play, you may since there is going to be a wait on the tenth tee anyway. Please ensure that you are not unduly delaying play, though, or we may be assessed a penalty."
Like that conversation ever happened on the golf course.
That said, I was kind of hoping it would fit in my golf bag. It's a bit too big for that. I've seen a couple "golf bag sized" ones here and there, but they aren't put out by the USGA. Does the USGA make such a thing?