The Philadelphia, Wilmington and Baltimore Railroad (PW&B) was a key transportation line in the northeastern United States, established in the 19th century. It connected major cities like Philadelphia, Wilmington, and Baltimore, facilitating the movement of goods and passengers. The railroad played a significant role in the economic development of the region. Founded in 1831, the PW&B was one of the earliest railroads in the area and contributed to the growth of the American railroad system. It was known for its efficient service and was eventually absorbed into larger railroad companies, becoming part of the Pennsylvania Railroad system.