American Concrete Institute 

American Institute of Steel Construction 

Association of Bay Area Governments 

Building Design & Construction Magazine:  Industry Links

California's Board for Professional Engineers and Land Surveyors

Design-Build Institute of America, DBIA

Earthquake Engineering Research Institute

ICBO Code Central 

National Trust for Historic Preservation

Society For Marketing Professional Services

Structural Engineers Association of California (SEAOC) 

Structural Engineers Association of Northern California (SEAONC)

Trussnet - The Wood Truss Council of America

USGS Earthquake Hazards Program, Northern California