Moosic was incorporated as a borough in 1898 and was followed by Old Forge shortly thereafter in 1899; these communities became a part of the area of Lackawanna County known as the Triboro. Throughout the years, industry and agriculture were the backbone of the local economy, and businesses like the Moosic Powder Company and Dutchess Underwear Company provided many residents with employment. In 1886, Arthur Frothingham purchased land in Moosic and opened Rocky Glen Park, the second oldest amusement park in Pennsylvania. Visitors enjoyed riding on the popular Million Dollar Roller Coaster until it closed its gates in 1987. Julia's Restaurant/Hotel is one of the oldest landmark establishments in Old Forge, and it is still in operation today, serving great food nightly. By the 1960s, Old Forge earned the title of "Pizza Capital of the World." Its trademark "Old Forge"-style pizza is served in many restaurants throughout Pennsylvania.