Border Empire Trilogy 3: Train To Durango

Wes Stone, son of The Gunfighter, has pursued his father's murderers, the Sandlin Gang, throughout the Sierra Nevadas. But in his quest for revenge, he has now uncovered their nefarious plan to loot four United States mints. The odds are long and the stakes are high as Stone must hunt down and face a mercenary army guarding a mysterious train, which is already seven hundred miles ahead of him...and headed straight for the Denver mint!