One of the two known photos of Robert Johnson. This portrait was taken by the Hooks Bros. Photography Company in Memphis, Tenn., circa 1935. Courtesy of the Delta Haze Corporation hide caption

itoggle caption Courtesy of the Delta Haze Corporation

One of the two known photos of Robert Johnson. This portrait was taken by the Hooks Bros. Photography Company in Memphis, Tenn., circa 1935. Courtesy of the Delta Haze Corporation hide caption

itoggle caption Courtesy of the Delta Haze Corporation

One of two existing photographs of Robert Johnson. Courtesy of the artist. hide caption

itoggle caption Courtesy of the artist.