1. On December 29, 1845, Delaware officially adopted its current state constitution. The new constitution established a bicameral legislature, which consisted of a House of Representatives and a Senate.

2. In 1935, the Wilmington and Western Railroad, which ran through Delaware, began using diesel-powered locomotives instead of steam engines. This made the railroad more efficient and economical.

3. American folk artist Howard Pyle was born on December 29, 1853, in Wilmington, Delaware. Pyle is best known for his illustrations of classic stories such as "Robin Hood" and "King Arthur."

4. On December 29, 1971, President Richard Nixon signed the Delaware Water Gap National Recreation Area into law. The park spans over 70,000 acres and includes parts of both New Jersey and Pennsylvania.

5. Delaware's first governor, John McKinly, was born on December 29, 1721. McKinly served as governor from 1777 until his death in 1796, making him the longest-serving governor in Delaware history.