America, Oh Yes
Offers folk art and outsider art with an extensive list of artists and information.
http://www.americaohyes.com/

Blessings to You
Spiritual folk prints by artist Priscilla Herr-Neckar.
http://www.blessingstoyou.us/

Clifford A. Wallach Gallery
Specializing in American Tramp Art.
http://www.trampart.com/

Creative Heart Gallery
A gallery for self-taught artists, represents embodies elements of the visual traditions of the same cultural groups whose musical traditions gave birth to such forms as Blues and Old Time music.
http://www.self-taughtart.com/

Gillens, Cassandra
Portraiture and genre scenes by this South Carolina artist.
http://www.cassandragillens.com/

Indigo Arts
A store and gallery of international folk art located in Philadelphia, PA.
http://www.indigoarts.com/

Kicking Bull Gallery
Featuring new and antique decoys, and folk art.
http://www.kickingbullgallery.com/

Primitive Kool Art
Collection of folk, outsider and self-taught artists including Jim Sudduth, Mose and Annie Tolliver, Roy Ferdinand, and Ody Saban.
http://primitivekoolart.com/

Visionary Art
Includes works by outsider artists, self-taught artists from around the Southeastern United States. They have at least this in common, expressing themselves freely and not limited by tradition.
http://www.visionaryart.com/

Wolf Creek Folk Art
American folk art, hand carved in wood.
http://www.wolfcreekfolkart.com/