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1. 104 State Water Plan Watersheds: Pennsylvania

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...

2. 10-Degree Graticule Grid, World, 1:110 million, 2012

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile displays graticules (grid lines of latitude parallels and longitude meridians) for the world at 10 degree intervals. Graticules... North American Cartographic Information Society.

3. 1:100,000 Quadrangle Polygon Boundaries: Russian River Watershed, California, 1996

1996. Circuit Rider Productions. This layer shows the areas of the USGS 1:100,000 quadrangle boundary maps that are within the watershed boundaries of the Russian River basin.This ... Circuit Rider Productions.

4. 1:1,000,000-Scale County Boundaries of the United States, 2014

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 County Boundary Lines of the United States, 2014

2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. This layer was derived from t... Geological Survey (U.S.).

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

2014. Geological Survey (U.S.). This polygon shapefile contains the boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by extract... Geological Survey (U.S.).

7. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014

2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.

8. 1:1,000,000-Scale State Boundaries of the United States, 2012

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.

9. 1:1,000,000-Scale State Boundaries of the United States, 2014

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.

10. 1:24,000 County Boundaries (cnty24k09_1_line)

2009. California Department of Forestry and Fire Protection (using data from BOR, DFG, and DOC FMMP). In late 1996, the Dept of Conservation (DOC) surveyed state and federal agencies about the county boundary coverage they used. As a result, DOC ado... California. California Department Of Forestry and Fire Protection., California. California Department Of Fish and Game.

11. 1:24,000 County Boundaries (cnty24k09_1_multipart)

2009. California Department of Forestry and Fire Protection (using data from BOR, DFG and DOC FMMP). In late 1996, the Dept of Conservation (DOC) surveyed state and federal agencies about the county boundary coverage they used. As a result, DOC ado... California. California Department Of Forestry and Fire Protection., California. California Department Of Fish and Game.

12. 1:24,000 County Boundaries (cnty24k09_1_poly)

2009. California Department of Forestry and Fire Protection (using data from BOR, DFG, and DOC FMMP). In late 1996, the Dept of Conservation (DOC) surveyed state and federal agencies about the county boundary coverage they used. As a result, DOC ado... California. California Department Of Forestry and Fire Protection., California. California Department Of Fish and Game.

13. 1:24,000 County Boundaries (cnty24k09_1_state_bnd)

2009. California Department of Forestry and Fire Protection (using data from BOR, DFG, and DOC FMMP). In late 1996, the Dept of Conservation (DOC) surveyed state and federal agencies about the county boundary coverage they used. As a result, DOC ado... California. California Department Of Forestry and Fire Protection., California. California Department Of Fish and Game.

14. 1:24,000 Quadrangle Polygon Boundaries: Russian River Watershed, California, 1996

1996. Circuit Rider Productions. This layer represents the polygon coverage of USGS 1:24,000 scale quadrangles that are within the watershed boundaries of the Russian River basin.T... Circuit Rider Productions.

15. 12-Nautical Mile Coastal Boundary, California, 2001

2001. King, C., California. Department of Fish and Game. Marine Resources Region, and Kum, J. This line shapefile represents the 12 nautical mile distance from the California coastline. It was created by buffering the county-coastline, which... California. Department of Fish and Game. Marine Resources Region.

16. 15 Degree Graticule, Northeast United States, 2010

2010. United States. National Oceanic and Atmospheric Administration, United States. National Ocean Service, United States. Department of Commerce, and Coastal Services Center (U.S.). This line shapefile displays graticules (grid lines of latitude parallels and longitude meridians) for the Northeastern United States at 15 degree ... Coastal Services Center (U.S.).

17. 1:50,000 chikeizu, Maps Index

1888. Stanford Geospatial Center. This polygon shapefile is an index to 1:50,000 scale maps of Japan, titled '1:50,000 chikeizu -- Gomanbun no ichi chikeizu -- 1:50,000地形圖 -- 五万分一地形... Stanford Digital Repository.

18. 1820 Busy Counties, China

1820. Snyder-Reinke, Jeffrey, 1969-. This point shapefile represents busy counties in China. This layer was created as part of the Grave Reform in Modern China project, a digital human... Stanford University. Center for Interdisciplinary Research.

19. 1949 Gulf Cooperation Council Region Tribal Map

2018. Maitha Salem AlMemari and H.R.P. Dickson. This vector layer represents the tribal boundaries in the Gulf Cooperation Council (GCC) region of the Middle East based on a map found in a H.R.P....

20. 1953 County Boundaries of China with Population Census Data

1953. This polygon shapefile represents the 1953 County Boundaries for China. The layer includes population census data and was primarily based on the "H... Beijing Hua tong ren shi chang xin xi you xian ze ren gong si.