Roots School runs a Primitive Arrow Making course in Central Vermont. From their site:
Native people often spent more time perfecting their arrows than their bows. In the act of hunting it is the arrow that delivers the killing blow, and its quality and precision are of the utmost importance. Thus, the process of building primitive arrows is an intricate art that is often overlooked. In this course we cover shaft harvesting, preparation and straightening, pitch preparation, fletching and hafting. We discuss the dynamics of arrow flight as it relates to spine weight and bow poundage, as well as different types of projectile points; such as stone, bone, antler, and hardwood.