1. In 1723, the town of Georgetown, Maryland was founded on July 18, 1723. Located along the Potomac River, it served as a major port and business center for the region.

2. July 18, 1864 marked the beginning of the Battle of Fort Stevens during the American Civil War. Confederate forces under General Jubal Early attacked the fort and the surrounding area, but were ultimately repelled by Union troops.

3. On July 18, 1919, the Baltimore Orioles played the Boston Red Sox in the first game at their new home field, Oriole Park at Venable Stadium. The Orioles won the game 2-1 in front of a sold-out crowd.

4. In 1947, civil rights activist Clarence Mitchell, Jr. led a successful campaign to end segregation in Maryland's state parks on July 18, 1947. The state agreed to abolish the policy and allow all citizens to use the parks regardless of race.

5. On July 18, 1969, Ted Hendricks signed with the Baltimore Colts and would go on to become a Pro Football Hall of Fame linebacker. He played for the Colts for four seasons before moving on to the Green Bay Packers, Oakland Raiders, and Miami Dolphins.