Hidden down alleyways, on street corners or on the bricks above the cityscape, Cincinnati's fading advertisements hide in plain sight. These ghost signs still tout their wares and services, remnants of a bygone era. Each sign has a vivid story behind it unique to its era, product, and craftsmanship. 'Wall dogs' like sign artist Gus Holthaus left their marks on the city. A sign for the Beehive, the club and restaurant at the top of the arena, reminds...