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1. Maryland County Boundary Files, 1860-1880

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The features represent the county boundaries in Maryland from the years 1860-1880. The Historical United States County Boundary Files 1790 - 1999 (...

2. Maryland County Boundary FIles,, 1890-1910

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. This shapefile contains county boundaries for Maryland for the years 1980-1910. The Historical United States County Boundary Files 1790 - 1999 (or...

3. United States County Boundary Files, 1790

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1790 contains ArcView shapefile format U.S. county boundary files for 1790. Files include count...

4. United States County Boundary Files, 1800

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1800 contains ArcView shapefile format U.S. county boundary files for 1800. Files include county...

5. United States County Boundary Files, 1810

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1810 contains ArcView shapefile format U.S. county boundary files for 1810. Files include county...

6. United States County Boundary Files, 1820

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1820 contains ArcView shapefile format U.S. county boundary files for 1820. Files include county...

7. United States County Boundary Files, 1830

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1830 contains ArcView shapefile format U.S. county boundary files for 1830. Files include county...

8. United States County Boundary Files, 1840

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1840 contains ArcView shapefile format U.S. county boundary files for 1840. Files include county...

9. United States County Boundary Files, 1850

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1850 contains ArcView shapefile format U.S. county boundary files for 1850. Files include county...

10. United States County Boundary Files, 1860

1999. Louisiana State University (Baton Rouge, La.).; Dept. of Geography and Anthropology., Earle, Carville., Heppen, John., and Otterstrom, Samuel. The Historical United States County Boundary Files 1860 contains ArcView shapefile format U.S. county boundary files for 1860. Files include county...