1. On September 16, 1945, the New Hampshire State Police was officially established. Prior to its creation, law enforcement was handled by local police departments and county sheriffs. The state police now provides law enforcement services across the state, including highway patrol, criminal investigations, and accident reconstruction.

2. The famous American poet Robert Frost was born on September 16, 1874, in San Francisco, California. Frost moved to New Hampshire in 1900, and many of his most famous poems, such as "Stopping by Woods on a Snowy Evening" and "The Road Not Taken," were inspired by the natural landscape of the state.

3. The town of Dover, New Hampshire was settled on September 16, 1623, making it one of the oldest permanent settlements in the United States. The town was originally named Northam and was later renamed Dover after the town of the same name in England.

4. On September 16, 1782, John Langdon was elected as the first president of the state of New Hampshire. Langdon had previously served as the state's first speaker of the House of Representatives and played a key role in the American Revolution.

5. The New Hampshire Historical Society was founded on September 16, 1823. Since its establishment, the society has worked to preserve and share the history of the state through exhibits, programs, and publications. The society's headquarters are located in Concord, New Hampshire.