TY - BOOK AU - Billington,Ray Allen TI - Westward expansion: a history of the American frontier AV - E179.5 .B63 1967 U1 - 973 PY - 1967///] CY - New York PB - Macmillan KW - United States KW - Territorial expansion KW - History KW - Mississippi River Valley KW - 1803-1865 KW - West (U.S.) N1 - "Bibliographical notes": p. 761-893 ER -