The links list over there ( <=== ) has been updated to remove Systematics in Prehistory and add one to a Radiocarbon site. Pity Systematics is no longer available on the web; it's really a remarkable book, even though most people, upon perusing its dense and often seemingly incomprehensible prose might prefer sticking themselves in the eye repeatedly with a Desert-side-notch-tipped stick. Dunnell is one of those writers who you really need to concentrate to understand, but when you put in the effort, it's worth it; even if you disagree, you have a clear idea of what he's said. This is very often a rare commodity in anthro/archaeological writing.
But hit the C14 site; it's got tons of good information and Higham will respond to serious questions with good information.