"...a self-taught artist in Glascock County, Georgia. Murray was an illiterate sharecropper who, after a religious vision while working the fields at the age of 70, produced a remarkable body of abstract paintings in the last decade of his life. His work is now in many important collections, including that of the American Folk Art Museum and the Smithsonian American Art Museum and has been featured in many museum exhibitions..." https://en.wikipedia.org/wiki/John_Bunion_Murray