Andrea Kirsh visits DC and reports back on the Smithsonian American Art Museum’s new retrospective on self-taught folk artist Bill Traylor. “Between Worlds: The Art of Bill Traylor” presents a thoughtful and nuanced (if overly-ambitious) reframing of an artist who developed his vibrant and graphic style of image making during one of the darkest eras in this country’s history. Catch it now through March 17, 2019.