This page links you to various technical societies in the engineering fields.
American Institute of Architects - Philadelphia Chapter
American Institute of Chemical Engineers - Delaware Valley Section
American Society of Civil Engineers Philadelphia Section
American Society of Heating, Refrigeration and Air Conditioning Engineers
American Society of Landscape Architects - Pennsylvania/Delaware Chapter
American Society of Plumbing Engineers - Philadelphia Chapter
American Society of Safety Engineers
Delaware Valley Science Council
Electrical Association of Philadelphia
Engineering Alumni Society - Univ of PA
General Building Contractors Association
Greater Philadelphia Building Professionals Association
Illuminating Engineering Society of North America - Philadelphia Section
Institute of Electrical & Electronic Engineers
Institute of Electrical & Electronic Engineers - Philadelphia Section
Institute of Industrial Engineers
ISA - Instrumentation, Systems & Automation Society - Wilmington Section
National Council of Structural Engineers Associations
National Defense Industrial Association
Penna. Public Utility Commission
Penna. Society of Professional Engineers
Penna. Society of Professional Engineers - Philadelphia Chapter
Pennsylvania Society of Professional Engineers - Valley Forge Chapter
Society of American Military Engineers - Philadelphia Post
Society of Fire Protection Engineers - Philadelphia-Delaware Valley Chapter