National Geographic : 1951 Jun
© National Geographic Society 714 Unable to Expand Outward, Manhattan Island Builds Toward the Sky Two million New Yorkers sleep in the island's 22 square miles. Commuters swell the daytime population to an estimated four million. Terraced white structure stands at the East River end of Wall Street, financial heart of the Nation. Freighter, tug, and ferry ply the Hudson (background). Warships tie up to the shore (upper right).