Tall organ-pipe cacti stand like sentinels over a sun-baked hillside as the terracotta rooftops of Guanajuato spill down the valley below — a painterly promotional gem issued by the Prudential Insurance Company of America to showcase the exotic destinations reachable by its policyholders in the early twentieth century. The image captures the rugged beauty of Mexico's central highlands: blue-hazed mountains recede into the distance, agave rosettes crowd the rocky foreground, and a warm ochre light bathes the colonial city nestled 6,200 feet above sea level. Prudential's Newark, N.J. home office distributed thousands of these scenic advertising cards as goodwill pieces, making them as much artifacts of American corporate culture as of Mexican geography.