Benton,  whose house and studio, preserved as they were at the time of his
death, are only a few miles from where I'm sitting,  also composed a few
separate black-and-white Mississippi-themed illustrations, as did many of
his students at the Kansas City Art Institute in '40s.  It is sometimes
difficult, without close examination, to tell which of these were done by
his students, many who imitated his "undulating line" style.
Martin Zehr
Kansas City, Missouri