History thumb|200px|A 1920 advertisement in the Baltimore Sun for racially restricted houses in Dundalk sold by Harry E. Gilbert. The area now known as Dundalk was explored by John Smith in 1608. Up until this time, the area was home to the tribes of the Susquehanna.
History thumb|200px|A 1920 advertisement in the Baltimore Sun for racially restricted houses in Dundalk sold by Harry E. G.ilbert. The area now known as Dundalk was explored by John Smith in 1608 Up until this time, the area was home to the tribes of the Susquehanna.