1. On September 4, 1888, the first electric streetcars began operating in Concord, New Hampshire. These streetcars were powered by overhead electric cables, replacing the previous horse-drawn carriages and creating a more efficient mode of transportation.

2. September 4, 1949 marked the opening of the New Hampshire State Liquor Commission, which was established to regulate the sale and distribution of alcohol within the state. Today, the commission operates over 70 liquor stores throughout New Hampshire.

3. In 1977, the iconic Old Man of the Mountain rock formation in Franconia Notch State Park collapsed. The "Great Stone Face" had been a beloved symbol of New Hampshire for centuries and appeared on the state's quarter; its collapse on September 4 was a significant loss for the state's natural heritage.

4. On September 4, 1797, the town of Pembroke was incorporated in New Hampshire. Originally a part of Concord, Pembroke became its own town due to its distinctive agricultural, lumbering, and manufacturing industries.

5. New Hampshire's primary elections are frequently held on September 4 – most recently in 2018 and 2020. In these elections, voters select which candidates will represent their political parties in the upcoming general election.