«The History of Slaveholding Indians» by Annie Heloise Abel

The History of Slaveholding Indians is a three volume series dealing with the slaveholding Indians as secessionists, as participants in the Civil War, and as victims under reconstruction. The series deals with a phase of American Civil War history which has heretofore been almost entirely neglected or, where dealt with, either misunderstood or misinterpreted.
Contents
The American Indian as Slaveholder and Secessionist
General Situation in the Indian Country, 1830–1860
Indian Territory in Its Relations With Texas and Arkansas
The Confederacy in Negotiation With the Indian Tribes
The Indian Nations in Alliance With the Confederacy
The American Indian as Participant in the Civil War The Battle of Pea Ridge, or Elkhorn and Its More Immediate Effects
Lane's Brigade and the Inception of the Indian
The Indian Refugees in Southern Kansas
The Organization of the First Indian Expedition
The March to Tahlequah and the Retrograde Movement of the “White Auxiliary”
General Pike in Controversy With General Hindman
Organization of the Arkansas and Red River Superintendency
The Retirement of General Pike
The Removal of the Refugees to the Sac and Fox Agency
Negotiations With Union Indians
Indian Territory in 1863, January to June Inclusive
Indian Territory in 1863, July to December Inclusive
Aspects, Chiefly Military, 1864–1865
The American Indian Under Reconstruction
Overtures of Peace and Reconciliation
The Return of the Refugees
Cattle-driving in the Indian Country
The Muster Out of the Indian Home Guards
The Surrender of the Secessionist Indians
The Peace Council at Fort Smith, September, 1865
The Harlan Bill
The Freedmen of Indian Territory
The Earlier of the Reconstruction Treaties of 1866
Negotiations With the Cherokees