* Hagerty: Hagerty is a classic car insurance company that also provides classic car valuation services. Hagerty's valuation tools are available online and through their mobile app.
* ClassicCars.com: ClassicCars.com is an online marketplace for classic cars. The website also provides information on classic car values.
* Old Cars Weekly: Old Cars Weekly is a magazine dedicated to classic cars. The magazine includes a section on classic car values.
* Hemmings Motor News: Hemmings Motor News is another magazine dedicated to classic cars. The magazine includes a section on classic car values.