1. In 1787, Delaware became the first state to ratify the United States Constitution, earning its nickname as "The First State." May 23, 1787 was the day that Delaware officially ratified the Constitution and became part of the new union.

2. The Delaware Memorial Bridge opened on May 23, 1951. The bridge spans the Delaware River and connects Delaware and New Jersey, and at the time of its construction, it was the longest suspension bridge in the world.

3. On May 23, 1918, Wilmington native Lieutenant John Dorsey Dorman of the United States Army was killed in action during World War I. Dorman was posthumously awarded the Distinguished Service Cross for his bravery and sacrifice.

4. The first issue of the Delaware Gazette was published on May 23, 1785. The newspaper was founded by James Adams, who had previously published a newspaper in Wilmington called the Delaware State Journal.

5. May 23, 2015 marked the 50th anniversary of the dedication of the Hagley Museum and Library, which is located in Wilmington. The museum and library are housed on the former site of the DuPont powder mills and celebrate the history of the DuPont family and their contributions to industry and innovation.