[Various (1967)] In each of the twenty culture zones she has excavated (to a total depth of 24 ft. below former surface level) where projectile points occur, there is one type per zone. The type succession is the same and the dates are approximately the same as a Coe's Piedmont riparian sites. We can, therefore, with considerable confidence, apply the Coe axiom to the elucidation of some of our more confused "complexes" in the Northeast and to the alignment as one tradition of those manifestations where the projectile points are obviously of similar "specific theme." This alignment has been done in a few cases, for the Perkiomen and Susquehanna Broad points for instance, but these are scarcely a beginning among the bewildering variety of sorts of points found in any locality, to say nothing of an entire region. CLASSIFICATION OF POINT TYPES