Lost River: Lincoln's Secret Weapon

True story of Anna Ella Carroll, unrecognized heroine of the American Civil War who assisted Lincoln as an unofficial cabinet member; she later devised the Tennessee River Plan that brought an early end to the war.

https://www.ganjingworld.com/zh-CN/gjwplus/detail/lost-river-lincoln-s-secret-weapon/1h7tiarcnhk4j3fuYz6hhn6lv1f21c