William K. Wilkins No description specified. 1-2 (2 Records) Documents Study of the Clay Pipes Excavated On the Draper Park (AFB, 20Sc41) and Fort Gratiot (Afd, 20Sc41) Sites, Port Huron, Michigan (1978) "A Study of the Historic Clay Pipes Excavated on the Draper Park and Fort Gratiot sites, Port Huron, Michigan" (1977)