TY  - BOOK
AU  - Ridge,Martin
AU  - Billington,Ray Allen
TI  - America's frontier story: a documentary history of westward expansion 
U1  - 973 
PY  - 1969///
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Frontier and pioneer life
KW  - United States
KW  - History
KW  - Sources
KW  - Territorial expansion
ER  -