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1643. Harvard Map Collection, Harvard Library and Marggraf, Georg, 1610-1644. This layer is a georeferenced raster image of the historic paper map entitled: [De Capitanie van Rio Grande, Paraiba, Itamarca, Paranambuca, Camera... Harvard Map Collection, Harvard Library.
1787. Harvard Map Collection, Harvard Library, Pratt & Marshall., Thorpe, Thomas., and Ashby, Harry, 1744-1818. This layer is a georeferenced raster image of the historic paper map entitled: An improved map of the villages, roads, farm houses, &c. five miles ... Harvard Map Collection, Harvard Library.
1976. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Asuncion Mita region, Guatemala. This layer was vectorized from original hard copy 1:50,000 topographic maps produced from the e... US Geological Survey, Hurricane Mitch Program.
2001. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Granada region, Nicaragua. This layer was vectorized from original hard copy 1:50,000 topographic maps produced by the Instituto... US Geological Survey, Hurricane Mitch Program.
1976. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Guatemala City region, Guatemala. This layer was vectorized from original hard copy 1:50,000 topographic maps produced from the ... US Geological Survey, Hurricane Mitch Program.
2001. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Jinotega region, Nicaragua. This layer was vectorized from original hard copy 1:50,000 topographic maps produced by the Institut... US Geological Survey, Hurricane Mitch Program.
2001. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Leon region, Nicaragua. This layer was vectorized from original hard copy 1:50,000 topographic maps produced by the Instituto Ge... US Geological Survey, Hurricane Mitch Program.
2001. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Managua region, Nicaragua. This layer was vectorized from original hard copy 1:50,000 topographic maps produced by the Instituto... US Geological Survey, Hurricane Mitch Program.
2001. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Matagalpa region, Nicaragua. This layer was vectorized from original hard copy 1:50,000 topographic maps produced by the Institu... US Geological Survey, Hurricane Mitch Program.
1976. Geological Survey (U.S.), Chirico, Pete., and United States. Agency for International Development. Boundaries for the Mazatenango region, Guatemala. This layer was vectorized from original hard copy 1:50,000 topographic maps produced from the ear... US Geological Survey, Hurricane Mitch Program.