Maine's ghost towns were built on wood, water and iron, and most were left by the 1950s. In the North Woods, Katahdin Iron Works smelted ore from 1845 to 1890 and housed about 200 families; its stone blast furnace and one charcoal kiln still stand in a state historic site. Riceville, a tannery village in Hancock County, had 136 people in 1890 and was empty by 1910, after its tannery burned in 1905. Askwith, a railroad and logging stop between Greenville and Rockwood, is now a name on the map called Tarratine.
On the Kennebec, the island town of Perkins on Swan Island had almost 100 people who built ships, farmed and cut ice. It was disincorporated in 1918 and empty by the 1940s; five old houses and a cemetery from 1802 remain in a state wildlife area. In 1950 a hydroelectric dam on the Dead River flooded Flagstaff and Dead River village to enlarge Flagstaff Lake, and foundations show when the water is drawn down.
Near Portland, the Oriental Powder Mills at Gambo, between Gorham and Windham, made gunpowder from 1824 to 1905, a quarter of the Union Army's supply in the Civil War; ruins line a short land trust trail.