1. Battle of The Cedars: On May 9, 1776, during the American Revolutionary War, a detachment of American troops under the command of Ethan Allen was defeated by British forces at the Battle of The Cedars in Quebec, Canada. The battle resulted in the capture of nearly 100 American soldiers, many of whom were later taken as prisoners of war.

2. First Public Transit System: On May 9, 1818, the Vermont Legislature approved the creation of the Burlington Gas Light Company, which also included the establishment of the state's first public transit system. The company was responsible for lighting Burlington's streets and buildings, and ran a horse-drawn carriage service for passengers.

3. First Statewide Woman Suffrage Campaign: On May 9, 1912, women's suffrage supporters launched the first statewide campaign for the right to vote in Vermont. The campaign was led by a group of women who were part of the Vermont Equal Suffrage Association, which had been formed the previous year.

4. John Dewey's Birthday: On May 9, 1859, philosopher and educator John Dewey was born in Burlington, Vermont. Dewey is best known for his pragmatic approach to education, which emphasized the importance of learning through experience.

5. First Ben & Jerry's Store: On May 9, 1978, Ben & Jerry's opened its first scoop shop in Burlington, Vermont. The ice cream company, which was founded by childhood friends Ben Cohen and Jerry Greenfield, has since become a global brand known for its creative flavors and commitment to social and environmental causes.