This unmailed postcard, published by Erickson Postcards & Souvenirs, shows an early 1980s (or perhaps late 1970s) scene of boats clustered outside the Duluth Harbor. The card must have been commissioned for promotional use by KDLH-TV in the 1990s or later, however, because it is preaddressed to David Letterman, courtesy of what was then the local CBS affiliate. Late Night with David Letterman ended its run on NBC-TV in June 1993 and the Late Show with David Letterman launched on CBS two months later. …
