“The Dallas Rapture”

At a science-fiction writing conference the other day, Doug Davis gave an interestingly entitled lecture on “God as Science Fiction, Science Fiction as God:  Christian Fabulation for American Technoculture,” or “The Sacred and the Profane in the Short Fiction of Ted Chiang and Flannery O’Connor.” In this report on his talk, it says he began by discussing this painting, called “The Dallas Rapture.” I can find only one other reference to the work on the Interwebs, in which it is refered to as a “classic.” From the skyline, I date it to circa 1975. Does anyone out there know anything about it? Who the artist is? Where it may be? A critic might say that it is amateurish. A more generous critic might call it, yes, a classic of 20th century American Christian fundamentalist folk art. But where is it? Who did it?