1 피터 그레이, "아일랜드 대기근" 시공사 1998
2 Rydell, Robert W, "the World's a Fair: Visions of Empire at American International Expositions, 1876-1916" Chicago UP 1984
3 Rydell, Robert W, "World of Fairs:the Century-of-progress Expositions" Chicago UP 1993
4 Stouck, David, "Willa Cather's Imagination" Nebraska UP 1975
5 Wister, Owen, "The Virginian" Barnes and Nobles 1902
6 Ford, John, "The Stagecoach"
7 Ford, John, "The Man Who Shot Liberty Valance"
8 Turner, Frederic, "The Frontier in American History" Henry Holt and Company 1920
9 Bolino, August C, "The Ellis Island Source Book" Kensington Historical Press 1985
10 Billington, Ray Allen, "The American Frontier Thesis:Attack and Defense" William Byrd Press 1958
1 피터 그레이, "아일랜드 대기근" 시공사 1998
2 Rydell, Robert W, "the World's a Fair: Visions of Empire at American International Expositions, 1876-1916" Chicago UP 1984
3 Rydell, Robert W, "World of Fairs:the Century-of-progress Expositions" Chicago UP 1993
4 Stouck, David, "Willa Cather's Imagination" Nebraska UP 1975
5 Wister, Owen, "The Virginian" Barnes and Nobles 1902
6 Ford, John, "The Stagecoach"
7 Ford, John, "The Man Who Shot Liberty Valance"
8 Turner, Frederic, "The Frontier in American History" Henry Holt and Company 1920
9 Bolino, August C, "The Ellis Island Source Book" Kensington Historical Press 1985
10 Billington, Ray Allen, "The American Frontier Thesis:Attack and Defense" William Byrd Press 1958
11 Brands, H.W, "The Age of Gold: The California Gold Rush and the New American Dream" Doubleday 2002
12 Marks, Paula Mitchell, "Precious Dust: the Saga of the Western Gold Rushes" HarperCollins West 1995
13 Cather, Willa, "O Pioneers!" Oxford UP 1913
14 Ford, John, "My Darling Clementine"
15 eJournal USA, "Immigrants Joining the Mainstream"
16 Eagleton, Terry, "Heathcliff and the Great Hunger: Studies in Irish Culture" Verso 1996
17 Slotkin, Richard, "Gunfighter Nation:The Myth of the Frontier in Twentieth-Century America" Oklahoma UP 1992
18 Miller, Kerby A, "Emigrants and Exiles:Ireland and the Irish Exodus to North America" Oxford UP 1985
19 Daniels, Roger, "Coming to America: A History of Immigration and Ethnicity in American Life" HarperCollins 1990
20 Mills, Nicolaus, "Arguing Immigration" Simon and Schuster 1994
21 Billington, Ray Allen, "America's Frontier Heritage" Holt, Rinehart and Winston 1966