Collecting Hollywood Autographs [ http://www.collectinghollywood.com/ ]
Offers Don Knotts autographs and other celebrity signatures from your favorite actors and actresses. Includes astronaut autographs, animation character autographs as well as full cast signed photos can be ordered online. All quality autographs and they come with a certificate of authenticity.

Collectors Society [ http://www.collectors-society.com/ ]
A community where both beginner and advanced collectors can learn more about their favorite hobby and have access to collector services in grading, education, products, and other areas.