Last year, more attention was paid to overlooked modernists and Indigenous artists . This year, don't be surprised if collectors looking for a hidden gem turn their focus to outsider art.

Yet even amid choice traditional offerings at Christie’s, Sotheby’s and the inveterate Winter Show (through 2 February) so-called “outsider art”—long considered a niche category—is now ...

The self-taught artist Abraham Lincoln Walker worked in his basement on phantasmagorical paintings, discovered by the art world more than 30 years after his death. By Hilarie M. Sheets Scott Kerr ...

Outsider art is defined as work "made by self-taught individuals, who are untutored in the traditional arts with typically little or no contact with the conventions of the art world." With this ...