A: Baltimore, Maryland, United States, B: Ellicott City, Maryland, United States
Painting of the laying of the cornerstone of the Baltimore and Ohio Railroad on July 4, 1828 by Charles Carroll of Carrollton, last surviving signer of the Declaration of Independence. Displayed at the B&O Railroad Museum in Baltimore, Maryland.
Construction of the first line on the Baltimore and Ohio Railroad, the first common carrier railroad, carrying passengers and freight, in the United States, began on July 4, 1828. The first section, from Baltimore west to Ellicott's Mills (now known as Ellicott City), opened on May 24, 1830.