Copies of correspondence relating to the career of Colonel George Morgan, father of Thomas Gibbes Morgan, Sr., a United States Indian agent in Pittsburgh, 1776, including letters concerning the American Indian vocabulary compiled for the universal dictionary of all languages compiled for the Empress of Russia, 1786. Certificates relating to the career of Judge Thomas Gibbes Morgan, Sr., date during 1823-1839. Papers of Thomas Gibbes Morgan, Jr., relate to his Civil War career as an officer of the 7th Louisiana Volunteers (Sarsfield Rangers), and in other commands from the Trans-Mississippi Department to Antietam; his wounding and convalescence; the prospects of Louisiana after the fall of Vicksburg; and imprisonment in Old Capitol Prison, Washington, D.C., 1863-1864. A letter of Sarah Fowler Morgan describes life in New Orleans and the Confederate raider Charles "Savez" Reed as he passed through the city as a prisoner. Mrs. Morgan also comments on her northern cousins. Letters of Gibbes Morgan tell of Johnson's Island Prison in Ohio. The collection includes a genealogical chart and data on the Morgan family.