1. In 1866, the first railroad line in New Hampshire was completed between Manchester and Concord. The line was operated by the Concord Railroad and played a significant role in the state's industrial and economic development.

2. On July 28, 1868, the New Hampshire Supreme Court ruled in favor of Dartmouth College in the landmark case of Trustees of Dartmouth College v. Woodward. The decision protected the college's status as a private institution and ensured its control remained with the Board of Trustees.

3. On July 28, 1917, the U.S. Army established an aviation camp at Hooksett, New Hampshire. The camp was used to train pilots and ground crews during World War I and played a significant role in the war effort.

4. In 1957, the New Hampshire Liquor Commission was established, marking the end of Prohibition in the state. The commission regulates the sale and distribution of alcohol in New Hampshire and generates significant revenue for the state.

5. On July 28, 1969, Neil Armstrong and Edwin "Buzz" Aldrin became the first humans to walk on the moon. The event was celebrated throughout the country, including in New Hampshire, where residents gathered to watch the historic moment on television.