Jeff,
As you probably know most clock cases are made by unknown builders. The clockmaker made or supplied the movement and someone local cased it. Many movements and dials were imported from England and fitted to cases here. There are many fantastic cases, some on clocks made by Godschalk or Rose come to mind. I find that people's tastes run to regional differences. You mention the Valley of Virginia. Clocks take on a local flavor and like the home team get local support.
There really isn't a good reference for clock cases that I know of and worse yet for dials. Maybe we should try to narrow down a favorite style of clock case first, Chippendale or Federal? Arch, broken arch, flat, gooseneck, or sarcophagus top?
I wonder if this topic should be moved to the Clocks section?
Mike Siemsen