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Adams National Historic Park
Adams National Historic Park
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Boston African American National Historic Site
Boston African American National Historic Site, Rand McNally--Boston African-American National His
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Boston Harbor Islands National Recreation Area
Boston Harbor Islands National Recreation Area, Boston Harbor Islands Partnership, BostonLightKeepers
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Boston National Historic Park
Boston National Historic Park, Boston National Historical Park
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Cape Cod National Seashore
Cape Cod National Seashore, Cape Cod National Seashore Guide
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Frederick Law Olmsted National Historic Site
Frederick Law Olmsted National Historic Site
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John Fitzgerald Kennedy National Historic Site
John Fitzgerald Kennedy National Historic Site
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Longfellow National Historic Site
Longfellow NHS Home Page
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Lowell National Historic Park
Lowell National Historical Park
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New Bedford Whaling National Historic Park
New Bedford Whaling National Historic Park
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Salem Maritime National Historic Site
Salem Maritime National Historic Site
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Saugus Iron Works National Historic Site
Saugus Iron Works National Historic Site
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Springfield Armory National Historic Site
Springfield Armory NHS
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National Parks in Massachusetts
http://data2.itc.nps.gov/parksearch/state.cfm?st=ma
NPS recreation areas, heritage corridors, national historic sites, national seashores and national historical parks in state.