Watering plants on the 64th floor of the R.C.A. Building in Rockefeller Center in April, 1955. (Ernie Sisto/The New York Times)
Manhattan's instantly-recognizable skyline is a vivid expression of the city's history and a breathtaking tribute to American economic success.
After the 1890 national census declared the end of the American frontier, leaders like President Theodore Roosevelt and Woodrow Wilson seized on the idea that sports — especially football — would preserve the nation’s hardy...