Hasson Park, with forty acres of natural wooded area, has rustic, stone, arch gateway at Bissell Avenue entrance. In Christ Protestant Episcopal Church are memorial windows by Lamb, New York. United States Post Office at the corner of Seneca and Clifford Streets, built by the Government in 1906, Romanesque, gray brick and stone. Carnegie Library, built, 1904, modified Romanesque, gray brick and stone; architect, Charles D. Bollon, Philadelphia. Five bridges over the Allegheny River include the original suspension bridge and “The Petroleum,” said to be finest in strength and dimension north of Pittsburgh; in 1892 a large petroleum tank caught fire and burning oil spread over the water in the creek, it also set fire to the buildings, and many lives were lost. From Franklin and Oil City, public highways, now under state control, lead along streams and over uplands of great beauty. [Illustration: IRON FURNACE--OIL CITY AND VICINITY When the iron and steel industry started, iron furnaces such as the above were built near deposits of bog ore, and the product shipped by the river to Pittsburgh long before railroads arrived or cities appeared] XXXII WARREN COUNTY Formed March 12, 1800; named for General Joseph Warren, who fell at the Battle of Bunker Hill in 1775; land is varied, with mountains, plains, and narrow valleys; the Allegheny River flows through, with tributaries large enough for floating rafts or propelling machinery. The beautiful Kinzua Hills, east, are nearly 2200 feet above tidewater, over them is the famous Kinzua Viaduct, said to be the highest in the world. Early industries were lumber and oil, now they are chiefly agriculture and manufacturing. WARREN, made county seat in 1819, was first laid out by General William Irving and Andrew Elliott, state commissioners in 1795; population 14,272; in 1800, first sawmill in the county was started which is said to have made the first raft of lumber ever floated down the Allegheny; it also sawed lumber in 1805 for Jackson’s Tavern, in which George W. Fenton, afterwards governor of New York, in 1806, taught school, until the schoolhouse of round logs with openings covered by oiled paper for windows, was ready. Courthouse, built, 1825, was first brick building in the county. A suspension bridge crosses the Allegheny here, built about 1871; near entrance to bridge is the Soldiers’ Monument, granite, erected in 1909, on which are inscribed the battles of Warren County men in Civil War. Bronze monument to General Warren and his soldiers is in the west park, dedicated, 1910, placed by the [Illustration: WARREN COUNTY] Joseph Warren Chapter, Daughters of the American Revolution. Memorial Library, classic, Doric; architect, Wetmore, New York, is on site of residence of Francis Henry, Esq.