We at Horner & Shifrin pride ourselves on being able to help others. We think that the following links provide information and services that you will find useful and interesting. We will continue to add new links to this page as we find them, so stop back often!
- American Association of State Highway and Transportation Officials
- Federal Geographic Data Quality
- Federal Highway Administration
- Federal Housing Administration
- General Services Agency
- Transportation Research Board
- National Oceanic and Atmospheric Administration
- US Air Force
- US Army Corps of Engineers
- US Department of Transportation
- US Environmental Protection Agency
- American Council of Engineering Companies of Illinois
- American Council of Engineering Companies of Missouri
- American Public Works Association
- American Society of Civil Engineers
- American Water Works Association
- Illinois Section of American Water Works Association
- Illinois Society of Professional Engineers
- Institute of Electrical and Electronic Engineers
- National Fire Protection Agency
- Missouri Rural Water Association
- Missouri Section of American Water Works Association
- Missouri Society of Professional Engineers
- Missouri Water Environment Association
- National Society of Professional Engineers
- The Engineers' Club of St. Louis
- Society of American Military Engineers
- Water Environment Federation