Works of art — produced by people who have had little or no formal training in art and who produce (or at least began by producing) art without regard to the mainstream art world’s recognition or marketplace.
Folk and outsider art online
Henry Darger
Adolf Wolfi, Images
Inez Nathaniel Walker
James Hampton, The Throne of the Third Heaven of the Nations Millenium General Assembly
Spinnwebe’s Word of God Sightings — this is bizarre and you truly should read it.