Stunned and grieving survivors stared into their burned-out town on the western frontier in the midst of the Civil War. William C. Quantrill's Missouri guerillas raided Lawrence, Kansas, on August 21, 1863, and killed 180 men and boys. Women lost husbands, children lost fathers, and fathers lost sons. Every one of the 2,500 residents lost either a loved one, a neighbor, or acquaintance. A few left town, but most survivors were determined to remain...