1. Vermont was admitted to the Union on March 4, 1791, but it wasn't until May 6 of that year that the first U.S. senators from the state were sworn in. Nathaniel Chipman and Stephen R. Bradley took their oaths of office in Philadelphia, then the nation's capital.

2. On May 6, 1882, the Vermont Marble Company was incorporated. This company, which had its headquarters in Proctor, Vermont, became one of the largest producers of marble in the world. Its marble was used in a wide range of applications, from the Lincoln Memorial to the United Nations headquarters in New York City.

3. May 6, 1942, saw the founding of St. Michael's College in Colchester, Vermont. This Catholic liberal arts college is known for its strong academics and commitment to community service. Notable alumni include former Vermont Governor Howard Dean and U.S. Senator Patrick Leahy.

4. May 6, 1971, was the day that Vermont became the first state in the nation to ban billboards along its highways. This law was passed in order to preserve Vermont's natural beauty and prevent roadside distractions that could lead to accidents.

5. On May 6, 1993, Vermont Governor Howard Dean signed a bill legalizing civil unions for same-sex couples. This made Vermont the first state in the nation to offer legal recognition to same-sex couples. The law was a precursor to the state's eventual legalization of same-sex marriage in 2009.