Gravity Railroad. Gravity Railroad Here began one of the first railroads in the Western Hemisphere, built 1828-1829. The line had its eastern terminus at Honesdale; its southwestern terminus was later extended to Archbald & ultimately to Valley Junction near Olyphant. Built by the Delaware & Hudson to move coal to the D & H Canal, this line eventually provided passenger service and operated until the beginning of 1899.

97 N Main St. (Rt. 6), at entrance to Gravity Park, Carbondale, PA, United States

Carbondale. Founded by the Wurts brothers, pioneers in developing anthracite resources of the region, in 1822. Here the first underground mine was opened in June, 1831, near Seventh Ave. Chartered as a city in 1851.

208 Fallbrook St. (PA 106), next to guard rail, Carbondale, PA, United States

Carbondale. Founded by the Wurts brothers, pioneers in developing anthracite resources of the region, in 1822. Here the first underground mine was opened in June, 1831, near Seventh Ave. Chartered as a city in 1851.

#5 6th Ave., at City Hall (6th Ave. side), Carbondale, PA, United States

Carbondale. Founded by the Wurts brothers, pioneers in developing anthracite resources of the region, in 1822. Here the first underground mine was opened in June, 1831, near Seventh Ave. Chartered as a city in 1851.

60 S Main St. (Bus. 6), at Housing Authority, Carbondale, PA, United States