In Red: Surface Finds of Clovis Projectile Points. After Croes et al. 2008.
I posted yesterday about the Manis Mastodon site and its possible status as a pre-Clovis site on the Olympic Peninsula. Clovis projectile points are so distinctive that most archaeologists have no problem assigning even an isolated find of such a point, lacking in any kind of stratigraphic context or any associated dates, to the Clovis archaeological culture. We know from sites elsewhere in North America that Clovis dates to a pretty narrow window, perhaps only 13,200 to 12,800 calendar years ago. It has always been very closely associated with the ice-free corridor route for the First Peopling of the Americas and is predominantly known from classic sites in places like Colorado, New Mexico and Texas. So it may come as a surprise to some that Clovis is pretty well represented in Puget Sound and north to Bellingham Bay, although only from surface or other finds without provenience.
Northwest Coast Archaeology 