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Conservation of Natural Resources (1963)
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Development of the English Colonies 1700-1775 (1960)
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Dutch and Swedish Exploration and Settlement (1961)
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English Exploration and Settlement (1960)
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French Exploration and Settlement (1960)
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Landscape Architecture in National and State Parks
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New England Architecture 1784-1880 (1970)
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Painting and Sculpture (1965)
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Political and Military Affairs
- 1830-1860 (1960)
- 1865-1912 (1963)
- after 1914 (1972)
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Signers of the Constitution-Middle Atlantic and New England States (1973)
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Sites Associated with American Authors (1971)
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Sites in the Southern Colonies Associated with the War for Independence (1973)
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Sites in the Middle Colonies Associated with the War for Independence (1972)
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Sites in New England Associated with the War for Independence (1972)
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Social and Humanitarian Movements (1965)
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The Civil War (1959)
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The War for Independence (1960)
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Village Sites of the Middle Missouri Subarea A.D. 1000-A.D.-1887 (1994)
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Westward Expansion and Extension of the National Boundaries to the Pacific, 1830- 1898
- Great Explorers of the West (1960)
- The Fur Trade (1960)
- Military and Indian Affairs (1959)
- The Santa Fe Trail (1963)
- The Texas Revolution and Mexican War (1959)
- The Cattleman's Empire (1959)
- Transportation and Communication (1963)
Special Studies
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