| American Council of Engineering Companies |
Civil Engineering Research Foundation |
| American Council of Engineering Companies of Illinois |
Construction Technology Laboratories |
| American Institute of Architects |
Consulting Engineers Council of Illinois |
| American Public Works Asociation |
Institute of Transportation Engineers |
| American Society for Engineering Education |
Midwest Concrete Consortium |
| American Society of Civil Engineers |
National Association of County Engineers |
| American Society of Highway Engineers |
National Concrete Bridge Council |
| American Society of Landscape Architects |
Structural Engineers Association of Illinois |
| Publications of the Headquarters, US Army Corps of Engineers |
National Society of Professional Engineers |