Illinois Professional Land Surveyors Association

http://www.iplsa.org/

National Society of Professional Surveyors

http://www.nspsmo.org/

American Congress on Surveying and Mapping

http://www.acsm.net/

National Society of Professional Engineers

http://www.nspe.org/index.html

Illinois Society of Professional Engineers

http://www.nspe.org/index.html

Johnson County Chamber of Commerce

http://jocochamber.com/