Musselman / Vesta Iron Furnace Office Building

Historical marker location:

4 Donegal Place, Marietta, Pennsylvania

( Marker can be reached from Furnace Road south of Donegal Place, on the left when traveling north.)

Circa 1868.

Pennsylvania is home to the longest stone arch bridge in the world, the Rockville Bridge, which spans the Susquehanna River near Harrisburg.