The Far Western frontier, 1830-1860 /

Eitemau Tebyg

• The Far Western frontier, 1830-1860.
  gan: Billington, Ray Allen, 1903-
  Cyhoeddwyd: (1956)
• America's frontier heritage /
  gan: Billington, Ray Allen, 1903-
  Cyhoeddwyd: (1966)
• THE LAST FRONTIER: A STUDY OF CULTURAL IMPERATIVES IN THE LAST FRONTIERS OF AMERICA AND AUSTRALIA.
  gan: GREENWAY, JOHN
• The Frontier in perspective /
  Cyhoeddwyd: (1965)
• The American frontier /
  gan: Babcock, Clarence Merton
  Cyhoeddwyd: (1964)