Page M. Richard
Pak Wilson W. S.
Panagin Romano
Parker John Henry
Parsons, Brinckerhoff, Quade & Douglas, Inc.
Parussatti Bruno
Patentes Talgo S.A.
Patents Talgo S.A.
Paton Hamilton N. K.
Paul John M.
Paxton & Vierling Steel Co.
Payton Buddy J.
Pees Ernst
Peitsch Michael A.
Pennsy Corporation
Persson Rickard
Petit Jean-Michel
Pfister Johann K.
Philipp Roland
Pierson Scott K.