Dunlap's Creek Bridge. An integral part of the National Road, this was the first metal arch bridge in the United States, built 1836-39. Replacing several earlier bridges on this site, including an 1809 Finley suspension bridge, this 80-foot span was built of cast iron by the U.S. Army Corps of Engineers. Capt. Richard Delafield and Lieutenant George W. Cass oversaw construction.

At bridge, Market Street, Brownsville, PA, United States

Brashear House. John A. Brashear, astronomer, educator, was born here 1840. His grandfather kept the Brashear House, a leading tavern. In 1825 Lafayette spoke from its doorway to the people of Brownsville.

517-523 Main St. (old US 40), Brownsville, PA, United States

Steamboat Enterprise/Boatbuilding Center. SIDE 1 (Steamboat Enterprise): Fourth steamboat built in Western Pennsylvania, Bridgeport, 1814. Engine design by Daniel French. Capt. Henry M. Shreve, commanding. Steamed to New Orleans, Fall, 1814 and returned June 1815. First steamboat to ascend the Mississippi and Ohio Rivers. SIDE 2 (Boatbuilding Center): Flatboats and keelboats built here for trade and downriver migration, 1780-1820. From 1825-1903 a leading steamboat construction center. Over 700 steamboats were built in Bridgeport and West Brownsville and completed in Brownsville.

Dunlap's Creek Park, Bank Street, Brownsville, PA, United States

Birthplace of John Alfred Brashear (1840-1920) - PLAQUE. Famed as a maker of astronomical instruments. Distinguished as Pennsylvania's "best loved citizen." "Somewhere beneath the stars is a work which you alone were meant to do. Never rest until you have found it." John Alfred Brashear... (missing)

517-523 Main St. (US 40), Brownsville, PA, United States

Philander Knox. Born May 6, 1853 in a house still standing on Front Street. Attorney-General in 1901, leading the anti-trust fight. A U.S. Senator, 1904-09. Secretary of State under Taft. Re-elected Senator in 1917. Died in 1921.

322 Front St., Brownsville, PA, United States