Trucking associations
- Illinois Trucking Association
- National Association of Publicly Funded Truck Driving Schools
- American Trucking Association
- Midwest Truckers Association
Governmental
- Illinois Secretary of State CDL Guide
- Illinois Birth Certificate
- Federal Motor Carrier Safety Administration
- National Registry (list of certified medical examiners for DOT physicals)
- TSA Universal Enrollment (Hazmat, TWIC, etc.)