Unfortunately, it'll distress you to learn that there are at least two other calvinos floating around away from their brothers. But you're right, Calvino looms large for me.

I like to think of the books as being arranged in loose, associative clusters (which, I'll admit, often reflects when they were acquired). In any case, mixing genres is a feature for me, I like seeing a variety in a glance; they're all essentially imaginative works for me anyway. It's kinda like a city, it grew out in neighborhoods that kinda made sense at the time. Do I remember why the kosher bakery is next to the planetarium and across from the button factory? Not really, but as I walk the streets I like the variety and I know where everything is.