1. The New York Times was first published on April 4, 1851. The newspaper was founded by Henry Jarvis Raymond and George Jones, and quickly became one of the most influential publications in the United States.

2. On April 4, 1968, the day Martin Luther King Jr. was assassinated, riots erupted in several cities across the United States, including New York City. The unrest in New York was concentrated in Harlem and Brooklyn, and resulted in looting and property damage.

3. On April 4, 1975, the iconic New York City landmark, the Chrysler Building, was declared a National Historic Landmark. The building, which opened in 1930, was designed by architect William Van Alen and is a distinctive example of the Art Deco style.

4. The first subway line in New York City started operation on April 4, 1908. The line ran from City Hall in Manhattan to 145th Street in Harlem, and was an instant hit with New Yorkers looking for a faster and more convenient way to get around the city.

5. On April 4, 1958, the opening ceremonies for the United Nations headquarters in New York City were held. The iconic complex, on the East River in Midtown Manhattan, was designed by a team of architects led by Wallace Harrison, and today serves as a hub for international diplomacy and cooperation.