of oxalic acid, it produces 10,000 pounds daily. The City Hall, Post Office, and Carnegie Library are fine buildings. The McKean County Historical Society has rooms in the Carnegie Library; among their collections are valuable historical papers and autographs, photographs, and samples of products relating to the oil industry, portraits of distinguished Pennsylvanians, and busts of General Kane and of Abraham Lincoln; the latter, by Theophilus Mills, is said to be one of the only two living masks ever made of Lincoln; it was made six weeks before the assassination, and after many years it was purchased from the son of the sculptor by Mr. R. B. Stone, and placed in the Bradford Library. The Museum and Art Gallery, owned by Lewis Emery, Jr., Esq., is at times open to the public. On the public square is a boulder, in honor of Governor McKean, from a tract of land in Annin Township, deeded to Thomas McKean by John Bull, a patriot of the Revolution. A tablet commemorating the Spanish War soldiers was erected by Spanish War veterans. KANE, a beautiful mountain resort, has Evergreen Park, a native forest, given to the town by the Erie Railroad, through their agent, General Thomas L. Kane; a path through the forest is named for General Grant, who frequently enjoyed trout fishing here with General Kane. Facing this park is the high school; classic style, architects, Davis & Davis, Philadelphia; contains good collection of photographic reproductions of famous paintings and architecture. The Presbyterian Church is memorial to General Kane, commander of the Bucktail Regiment, erected by his family. At LEWIS RUN the great Indian hunter, Jim Jacobs, lived. [Illustration: POTTER COUNTY] XLI POTTER COUNTY Formed March 26, 1804; named for General James Potter, an officer of the Revolution, is an almost trackless wilderness covered with dense growth of pine and hemlock, the haunt of bear, deer, wolf, panther, fox, and other wild game. Mean elevation is about 1900 feet above sea. At head waters of the West Branch, Genesee and Allegheny rivers, in the north, the ground is rolling, with beautiful farms; the southern part is broken by deep valleys and lofty mountains, with most picturesque scenery, especially in the Kettle Creek and Sinnemahoning valleys. Probably the first white man to cross the county was David Zeisberger, who passed down the Allegheny River to mouth of the Tionesta, Forest County, in 1767; his journal, now on file in the Moravian Library at Bethlehem, tells of the wild beauty of the county. Farming and stock raising are gaining, but the main industry is still lumbering, with second growth of hardwoods, maple, beech, and birch, which will in time be a great nucleus of wealth.