In the states of the former Confederacy, Reconstruction amounted to a second Civil War, one that white southerners were determined to win. An important chapter in that undeclared conflict played out in northeast Texas, in the Corners region where Grayson, Fannin, Hunt, and Collin Counties converged. Part of that violence came to be called the Lee-Peacock Feud, a struggle in which Unionists led by Lewis Peacock and former Confederates led by Bob Lee sought to even old scores, as well as to set the terms of the new South, especially regarding the status of freed slaves. Until recently, the...