1. In 1792, the cornerstone of the original Baltimore and Ohio Railroad was laid in what is now present-day Baltimore City. This railroad was the first in the United States to offer scheduled passenger train service and played a significant role in the development of transportation in the country.

2. On January 19, 1824, the Maryland State Colonization Society was founded in Baltimore. This organization was dedicated to sending free African Americans to the newly established colony of Liberia in West Africa. This effort was controversial and met with resistance from many in the African American community who saw it as a form of forced emigration.

3. The historic African American college, Morgan State University, was founded on January 19, 1867, as the Centenary Biblical Institute in Baltimore. It was one of the first schools in the United States to offer higher education for African American students, particularly in the field of theology.

4. In 1937, the Maryland Theatre in Hagerstown opened its doors to the public. This historic theater has hosted performances ranging from vaudeville acts to modern theatrical productions and is a beloved cultural institution in Western Maryland.

5. On January 19, 2003, the Baltimore Ravens won Super Bowl XXXV in Tampa, Florida. This championship victory was the first in the team's history and marked a major milestone for football fans in Maryland. The Ravens defeated the New York Giants 34-7 in what was considered one of the most dominant defensive performances in Super Bowl history.