This collection of maps traces the development of America's biggest and most historically important cities, allowing readers to see these metropolises--many of them vital stops along immigration and migratory routes--as their ancestors would have seen them. This book, a continuation of the historical maps book series, will guide you through American history by looking at the country's most populous and historically important cities. Maps trace the city's growth and development from its founding to the turn of the twenty-first century, giving you the ability to see the city as your ancestors who lived there did. For even more research value, the maps for each city will be accompanied by a quick reference timeline with key dates that affect genealogy record availability and information about valuable resources for the area, such as gaps in census coverage and when and where city directories are available. These books will also have wider, historical crossover appeal in the twenty major cities that will be featured, including New York, Houston, Philadelphia, Chicago and Los Angeles.