Colorado Wall Dogs: Ghost Signs Across the State began as a limited-edition artist book. My goal was to document and preserve Colorado’s historic painted brick wall ghost signs by cataloging and photographing this important part of the state’s history. While searching out and photographing these hand-painted signs I nicknamed the signs “wall dogs” in homage to the men who painted them. My three-year effort to photograph the signs was an incredible exploration of a graphic and architectural history that taught me much about our buildings, our communities and our past.