- The U.S. Small Business Administration
- Helpful article: Signage for Your Business
- Sign FAQs
- Municipal Code Corporation
- Signs of the Times Magazine
- International Sign Association
- World Sign Associates
- Southeast Sign Association
- Florida Sign Association
- Southern States Sign Council
- Mid South Sign Association
- Texas Sign Association
- Restaurant Facility Mgmt Assoc.
- NC Petroleum Association
- South Carolina Petroleum Marketers
- South Carolina Association of Convenience
- Virginia Petroleum, Convenience and Grocery Association(VPCGA)
- UL
- EPA
- OSHA
