Book excerpt: The unique character of San Francisco's Chinatown is revealed in a historical map and fascinating photographs This colorful and playful time capsule of San Francisco's Chinatown shares the stories of the unique businesses, culture, and people encountered by map illustrator Ken Cathcart between 1939 and 1955. Each quadrant of the map, supplemented by never-before-seen black-and-white photographs and meticulous research, drops the reader into a world of curious characters that reveals a glimpse of the immigration story so universal to America in both its celebratory aspects and its darkness.