Pennsylvania Society of Professional Engineers:
www.pspe.org

Pennsylvania State Registration Board for Professional Engineers, Land Surveyors and Geologists:
www.dos.state.pa.us/bpoa/cwp/view.asp?a=1104&g=432715

American Society of Plumbing Engineers:
www.aspe.org

American Society of Heating, Refrigeration and Air-Conditioning Engineers:
www.ashrae.org

The National Council of Examiners for Engineering and Surveying:
www.ncees.org

York Chamber of Commerce:
www.yorkchamber.com

Green Building Association of Central Pennsylvania:
www.gbacpa.org