Parsons
Phoenix Iron Works., Port Huron, Michign [for Tug B.B. Inman]
Piehlstick-Colt
Polson Iron Works
Polson Iron Works, Ontario
Polson Iron Works, Toronto, Ontario
Port Arthur Ship Building Co.
Port Arthur Ship Building Co., Ltd.
Port Arthur Ship Building Co., Ltd., Toronto, Ontario
Port Huron Ship Building Co., Port Huron, Michigan. (Phoenix Iron Works)