["Technology & Engineering \/ Electrical","Guerrillas;Missouri;History;19th century.","Missouri;History;Civil War, 1861-1865;Underground movements.","United States;History;Civil War, 1861-1865;Underground movements.","Guerrillas;Missouri;History;19th century.","History, American | Civil War & Reconstruction","Missouri;History;Civil War, 1861-1865;Underground movements.","Technology & Engineering \/ Electrical","United States;History;Civil War, 1861-1865;Underground movements."]