1. In 1955, the Baltimore Orioles played their first game as a Major League Baseball team on April 5th against the Detroit Tigers at Memorial Stadium. Despite losing the game 3-0, the team would go on to win the American League pennant that year.

2. On April 5th, 1917, then-president Woodrow Wilson addressed Congress to request a declaration of war against Germany, formally entering the United States into World War I. This decision ultimately led to the creation of Fort Meade, located in Maryland, which would serve as a training and deployment center for soldiers throughout the war.

3. In 1968, the first performance of the musical "Hair" in Maryland took place on April 5th at the Mechanic Theatre in Baltimore. The show, which featured a mix of rock music and social commentary, gained popularity for its countercultural message and became a cultural phenomenon of the time.

4. April 5th, 1995 marked the opening of the Baltimore Orioles' new stadium, Oriole Park at Camden Yards. The ballpark, known for its retro design and brick exterior, revitalized the city and set the standard for future stadium construction.

5. On April 5th, 1847, Edgar Allan Poe's poem "Ulalume" was published in the American Review: A Whig Journal. Poe, a Baltimore native, is regarded as one of the most influential writers in American literature and his works have had a lasting impact on the horror and mystery genres.