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1. 1:1,000,000-Scale Combined Statistical Areas, 2013

Polygon Stanford University Public content
2013. National Atlas of the United States. This polygon shapefile contains combined statistical areas in the United States and Puerto Rico. Combined statistical areas consist of two or more ... National Atlas of the United States.

2. 1:1,000,000-Scale Core Based Statistical Areas, 2013

Polygon Stanford University Public content
2013. National Atlas of the United States. This polygon shapefile contains core based statistical areas in the United States and Puerto Rico. The map layer was created from the CENSUS 2010 T... National Atlas of the United States.

3. 1:1,000,000-Scale County Boundaries of the United States, 2014

Polygon Stanford University Public content
2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands, by showing the counties as ar... Geological Survey (U.S.).

5. 1:1,000,000-Scale State Boundaries of the United States, 2012

Polygon Stanford University Public content
2012. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.

6. 1:1,000,000-Scale State Boundaries of the United States, 2014

Polygon Stanford University Public content
2014. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.

8. Agriculture Census of the United States, 2002

Polygon Stanford University Public content
2002. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2002 Census of Agriculture by the National Agricultural St... National Atlas of the United States.

9. Agriculture Census of the United States, 2007

Polygon Stanford University Public content
2007. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2007 Census of Agriculture by the National Agricultural St... National Atlas of the United States.

10. Anchorages, Northeast United States, 2013

Polygon Stanford University Public content
2013. Baldwin Group. This polygon shapefile represents anchorages in the Northeastern United States. The areas described are designated as special anchorage areas for p... Coastal Services Center (U.S.).

11. Aquaculture, Northeast United States, 2014

Polygon Stanford University Public content
2013. SeaPlan. This polygon shapefile represents aquaculture regions in the northeastern United States. Aquaculture in the northeast region is a diverse, vibrant ... Northeast Ocean Data.

13. Bailey's Ecoregions and Subregions of the United States, 2004

Polygon Stanford University Public content
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.

14. BOEM Lease Areas, 2013

Polygon Stanford University Public content
2013. United States. National Oceanic and Atmospheric Administration. This polygon shapefile represents Board of Ocean Energy Management (BOEM) lease areas in the Northeastern United States. The Cape Wind Energy Proje... United States. National Oceanic and Atmospheric Administration.

15. BOEM Wind Planning Areas, Atlantic Region, 2013

Polygon Stanford University Public content
2013. United States. Bureau of Ocean Energy Management. Office of Renewable Energy Programs. This polygon shapefile represents the most recent changes for the Bureau of Ocean Energy Management (BOEM) Wind Development Planning Areas in the A... United States. Bureau of Ocean Energy Management.

16. Bridges, Cambridge, Massachusetts, 2010 (pub. 2014)

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This layer contains polygon features representing bridges in Cambridge, Massachusetts, 2010. City of Cambridge IT Department.

17. Buildings, Cambridge, Massachusetts, 2010 (pub. 2014)

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This layer contains polygon features representing buildings in Cambridge, Massachusetts, 2010. City of Cambridge IT Department.

18. Bus Shelters, Cambridge, Massachusetts, 2010 (pub. 2014)

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This layer contains polygon features representing bus shelters in Cambridge, Massachusetts, 2010. City of Cambridge IT Department.

19. Cemeteries, Cambridge, Massachusetts, 2010 (pub. 2014)

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This layer contains polygon features representing cemeteries in Cambridge, Massachusetts, 2010. City of Cambridge IT Department.

20. Census 2010 Block Groups, Cambridge, Massachusetts

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains the boundaries of the 80 block groups in the City of Cambridge for the 2010 US Census. Cambridge (Mass.). Geographic Information Systems.

21. Census 2010 Blocks, Cambridge, Massachusetts

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains the 886 census blocks that make up the City of Cambridge for the 2010 Census. Cambridge (Mass.). Geographic Information Systems.

22. Census American Indian Reservations, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer depicts feature location and other associated data for American Indian tribal entities. Categories included here are: American India... U.S. Department of Commerce, Bureau of the Census.

23. Census Blocks, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons in this datalayer represent U.S. Census Blocks for the entire state. Census blocks are areas bounded on all sides by visible features... U.S. Department of Commerce, Bureau of the Census.

24. Census Congressional Districts, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent Congressional Districts (104th Congress) for the entire state. Congressional districts (CDs) are the 435 areas from which ... U.S. Department of Commerce, Bureau of the Census, Geography Division.

25. Census Counties, 1990 - Massachusetts

Polygon Harvard University Public content
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the counties for the state, based on a ground condition of January 1, 1990. The primary legal divisions of most states are ... U.S. Department of Commerce, Bureau of the Census, Geography Division.

26. Census County Divisions and Minor Civil Divisions, 1990 - Massachusetts

Polygon Harvard University Public content
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census County Divisions and Minor Civil Divisions based on the 1990 Census. Census county divisions (CCDs) are county subdi... U.S. Department of Commerce, Bureau of the Census.

27. Census County Divisions and Minor Civil Divisions, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census County Divisions and Minor Civil Divisions for the entire state. Census County Divisions (CCDs) are county subdivisi... U.S. Department of Commerce, Bureau of the Census.

28. Census Elementary School Districts, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the school districts throughout the state. School districts are geographic entities within which state, county, or local o... U.S. Department of Commerce, Bureau of the Census.

29. Census Key Geographic Locations, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Key Geographic Locations (KGLs) throughout the state, as definded by the US Census Bureau. Essential attribute data inc... U.S. Department of Commerce, Bureau of the Census.

30. Census Landmark Polygon Features, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays polygon landmark features throughout Massachusetts. "Landmark" is the general name given to a cartographic (or locational)... U.S. Department of Commerce, Bureau of the Census.

31. Census Metropolitan Statistical Areas, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Metropolitan Statistical Areas (MSAs) for the state. MSAs are metropolitan areas (MAs) that are not closely associated with... U.S. Department of Commerce, Bureau of the Census.

32. Census Places, 1990 - Massachusetts

Polygon Harvard University Public content
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Census Places for the state based on the ground condition of January 1, 1990. Places, for the reporting of decennial ce... U.S. Department of Commerce, Bureau of the Census.

33. Census Places, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Census Places for the state based on the ground condition of January 1, 1995. Places, for the reporting of decennial ce... U.S. Department of Commerce, Bureau of the Census.

34. Census Primary Metropolitan Statistical Areas, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Metropolitan Statistical Areas (MSA) for the state. Metropolitan statistical areas (MSAs) are metropolitan areas (MAs) that... U.S. Department of Commerce, Bureau of the Census.

35. Census Secondary School Districts, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the secondary school districts throughout the state. School districts are geographic entities within which state, county, ... U.S. Department of Commerce, Bureau of the Census.

36. Census Tracts, Cambridge, Massachusetts, 2010

Polygon Harvard University Public content
2010. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains the boundaries of the 30 census tracts that make up the City of Cambridge for the 2010 Census. Cambridge (Mass.). Geographic Information Systems.

37. Census Traffic Analysis Zones, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census Tracts for the state. Census tracts are small, relatively permanent statistical subdivisions of a county or statisti... U.S. Department of Commerce, Bureau of the Census.

38. Census Traffic Analysis Zones, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Traffic Analysis Zones (TAZ) for the state. A traffic analysis zone (TAZ) is a statistical entity delineated by state o... U.S. Department of Commerce, Bureau of the Census.

39. Census Unified School Districts, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Unified School Districts for Massachusetts. A unified school district is inclusive of kindergarten through twelfth gr... U.S. Department of Commerce, Bureau of the Census.

40. Census Urbanized Areas, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Urbanized Areas (UAs) for the state. The Census Bureau defines UAs as an area consisting of a central place(s) and adja... U.S. Department of Commerce, Bureau of the Census.

41. Census Voting Districts, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Voting Districts throughout the state. A Voting District (VTD) is the generic name for a variety of geographic entities... U.S. Department of Commerce, Bureau of the Census.

42. Census Water Bodies, 1995 - Massachusetts

Polygon Harvard University Public content
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays water bodies throughout the state. This category includes lakes, ponds, bays, rivers, reservoirs and other water features.... U.S. Department of Commerce, Bureau of the Census.

43. City Boundary, Cambridge, Massachusetts, 2014

Polygon Harvard University Public content
2014. Cambridge (Mass.). Geographic Information Systems. This layer consists of one polygon representing the area and political boundary of the City of Cambridge. Cambridge (Mass.). Geographic Information Systems.

44. Coal Fields of the United States

Polygon Stanford University Public content
2001. Eastern Energy Resource Surveys Team (Geological Survey). This polygon shapefile shows the coal fields of Alaska and the conterminous United States. Most of the material for the conterminous United States ... National Atlas of the United States.

45. Coastal Barrier Resource System, Northeast United States, 1982-2008

Polygon Stanford University Public content
1982. Coastal Services Center (U.S.), United States. National Oceanic and Atmospheric Administration, and United States. National Ocean Service. The Coastal Barrier Resources Act (CBRA) of 1982 established the John H. Chafee Coastal Barrier Resources System (CBRS), comprised of undeveloped c... United States. National Ocean Service.

46. Coastal Wetlands, Northeast United States, 1977-2014

Polygon Stanford University Public content
1977. U.S. Fish and Wildlife Service. This polygon shapefile represents the extent, approximate location and type of wetlands and deepwater habitats in the Northeastern United States be... U.S. Fish and Wildlife Service.

47. Commercial Tax Districts, Cambridge, Massachusetts, FY 2013

Polygon Harvard University Public content
2013. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains commercial taxing districts for the City of Cambridge. This data is updated through January 1, 2012. Cambridge (Mass.). Geographic Information Systems.

48. Commercial Tax Districts, Cambridge, Massachusetts, FY 2014

Polygon Harvard University Public content
2014. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains commercial taxing districts for the City of Cambridge. Cambridge (Mass.). Geographic Information Systems.

49. Congressional Districts, Cambridge, Massachusetts, 2014

Polygon Harvard University Public content
2014. Cambridge (Mass.). Geographic Information Systems. This polygon layer contains the twp elective districts for congressmen in Cambridge in the United State Congress. Cambridge (Mass.). Geographic Information Systems.

50. Costly Regional Landslide Events in the United States

Polygon Stanford University Public content
2001. Godt, Jonathan W. This polygon shapefile contains information on costly regional landslide events in the 50 United States and Puerto Rico. The extents of the regiona... National Atlas of the United States.