Today, 70 years plus one day after D-Day, I turned to The New York Times Arts section and found three stories directly related to World War II and our ongoing processing of that horrendous time. Being a hopeless addict of historical ephemera was immediately drawn in to a review of “The Power of Words and Images in a World at War,” an exhibition just opened at the Grolier Club in Boston. On display are the iconic and memory tweaking images, posters, propaganda items as well as photos and other...