Jacksborobr/Jack County, Texasbr/33 18.654' N 98 19.978' Wbr/Address: U.S. 281br/ br/Text: Marked by quot;Seven Blue Hillsquot; in distance. To right is Spy Knob -- a lookout during pioneer days. Noted atrocity site: In 1857, the Cambren and Mason families, settlers, were victims of white renegades and Indians. On May 18, 1871, on western rim, teamsters of Warren Wagon Train were killed soon after General W. T. Sherman of the U.S. Army had traveled safely through this valley. On July 12, 1874, the escort part of Major John B. Jones, Commander of the Frontier Battalion, Texas Rangers, was ambushed here, with two men killed. In later years, this has been peaceful farm-ranch area.br/ br/Date Photographed: 21-05-20