General Crook and the Western Frontier - University of Oklahoma Press

General George Crook was one of the most prominent soldiers in the frontier West. General William T. Sherman called him the greatest Indian fighter and manag

Albert Sieber, Civil War Wiki

Albert Sieber, Civil War Wiki

Al Sieber - Wikipedia

Albert Sieber, Military Wiki

Al Sieber – Wikipedia

Al Sieber - Wikiwand

Al Sieber AustriaWiki im Austria-Forum

Albert Sieber, Military Wiki

General Crook and the Western Frontier - University of Oklahoma Press

Albert Sieber

Map of the Western Frontier in the United States, 1800s' Giclee Print

Western Frontier (1935) - IMDb

Exhibition captures essence of Western frontier

Growing Up with the Country: Childhood on the Far Western Frontier (Histories of the American Frontier Series)

Map Illustrating the Plan of the Defences of the Western and North Western Frontier