Four streets and a square: a history of Manhattan and the New York idea

Creating the city: Wall Street 1600-1800

Building the city: Union Square 1800-1890

The City Electric: 42nd Street 1900-1920s

Difference: West 4th Street, 125th Street 1900-1930s

The city sufferers: Wall Street, 42nd Street, West 4th Street, 125th Street, Union Square 1930-1945

World city, fractured city, world city: 42nd Street, West 4th Street, Union Square, Wall Street, 125th Street 1945-present.