2011. United States. Federal Emergency Management Agency. The flood insurance risk zone layer contains information about the flood hazards for Maryland. These zones are used by the federal Emergency Manage... Federal Emergency Management Agency (FEMA).
Search Results
1862. Harvard Map Collection, Harvard College Library, Willcox, William H., Shoemaker, J. G., and P.S. Duval & Son. This layer is a georeferenced raster image of the historic paper map: Map of the battlefield of Antietam, prepared by Wm. H. Willcox, Top. Off. & A... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1806. Harvard Map Collection, Harvard Library, Carleton, Osgood, 1742-1816., and Sullivan, John, publisher. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the United States of America : including part of Louisi... Harvard Map Collection, Harvard College Library.
1862. Harvard Map Collection, Harvard College Library and Geary, John White, 1819-1873. This layer is a georeferenced raster image of the untitled historic paper manuscript map: [Map of the country between Harpers Ferry and Leesburg, 1... Harvard Map Collection, Harvard College Library.
1862. Harvard Map Collection, Harvard College Library and L. Prang & Co. This layer is a georeferenced raster image of the historic paper map: War telegram marking map. It was published by L. Prang & Co. in 1862. Scale [... Harvard Map Collection, Harvard College Library.
1749. Harvard Map Collection, Harvard Library, Evans, Lewis, 1700?-1756., and Hebert, L. This layer is a georeferenced raster image of the historic paper map entitled: A map of Pensilvania, New-Jersey, New-York, and the three Delaware c... Harvard Map Collection, Harvard College Library.
1778. Harvard Map Collection, Harvard Library, Hutchins, Thomas, 1730-1789., and Cheevers, T. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the western parts of Virginia, Pennsylvania, Maryland, ... Harvard Map Collection, Harvard College Library.
1778. Harvard Map Collection, Harvard Library, Hutchins, Thomas, 1730-1789., and Cheevers, T. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the western parts of Virginia, Pennsylvania, Maryland, ... Harvard Map Collection, Harvard College Library.
1778. Harvard Map Collection, Harvard Library, Hutchins, Thomas, 1730-1789., and Cheevers, T. This layer is a georeferenced raster image of the historic paper map entitled: A new map of the western parts of Virginia, Pennsylvania, Maryland, ... Harvard Map Collection, Harvard College Library.
1660. Harvard Map Collection, Harvard College Library and Jansson, Jan, 1588-1664. This layer is a georeferenced raster image of the historic paper map entitled: Belgii novi, angliae novae, et partis Virginiae : novissima delineat... Harvard Map Collection, Harvard College Library.
1671. Harvard Map Collection, Harvard College Library, Montanus, Arnoldus, 1625?-1683., and Meurs, Jacob van, 1619-1680. This layer is a georeferenced raster image of the historic paper map entitled: Novi Belgii, quod nunc Novi Jorck vocatur, Novae q[ue] Angliae & par... Harvard Map Collection, Harvard College Library.
1684. Harvard Map Collection, Harvard College Library and Visscher, Nicolaes, 1649-1702. This layer is a georeferenced raster image of the historic paper map entitled: Novi Belgii Novaeque Angliae nec non partis Virginiae tabula : multi... Harvard Map Collection, Harvard College Library.
1690. Harvard Map Collection, Harvard College Library, Jansson, Jan, 1588-1664., Schenk, Peter, 1660-1718 or 9., and Valck, G. (Gerard), 1651 or 2-1726. This layer is a georeferenced raster image of the historic paper map entitled: Belgii novi, angliae novae, et partis Virginiae : novissima delineat... Harvard Map Collection, Harvard College Library.
1730. Harvard Map Collection, Harvard College Library and Seutter, Matthaeus, 1678-1756. This layer is a georeferenced raster image of the historic paper map entitled: Recens edita totius Novi Belgii in America Septentrionali siti, deli... Harvard Map Collection, Harvard College Library.
1755. Harvard Map Collection, Harvard College Library, Mitchell, John, 1711-1768., Kitchin, Thomas, d. 1784., and Millar, Andrew, 1707-1768. This layer is a georeferenced raster image of the historic paper map entitled: A map of the British and French dominions in North America : with th... Harvard Map Collection, Harvard College Library.
1755. Harvard Map Collection, Harvard College Library, Mitchell, John, 1711-1768., Kitchin, Thomas, d. 1784., and Millar, Andrew, 1707-1768. This layer is a georeferenced raster image of the historic paper map entitled: A map of the British and French dominions in North America : with th... Harvard Map Collection, Harvard College Library.
1799. Harvard Map Collection, Harvard College Library, Maverick, Peter, 1780-1831., and Williamson, Charles, 1757-1808. This layer is a georeferenced raster image of the historic paper map entitled: Map of the middle states of North America : shewing the position of ... Harvard Map Collection, Harvard College Library.
1862. Harvard Map Collection, Harvard College Library and Stoneman, George, 1822-1894. This layer is a georeferenced raster image of the untitled historic paper manuscript map: [Map of Poolesville, Maryland and vicinity showing the po... Harvard Map Collection, Harvard College Library.
1825. Harvard Map Collection, Harvard College Library, Vance, D. H. (David H.), Young, J. H. (James Hamilton), and Finley, A. (Anthony). This layer is a georeferenced raster image of the historic paper map entitled: Map of the United States of North America, compiled from the latest ... Harvard Map Collection, Harvard College Library.
1825. Harvard Map Collection, Harvard College Library, Vance, D. H. (David H.), Young, J. H. (James Hamilton), and Finley, A. (Anthony). This layer is a georeferenced raster image of the historic paper map entitled: Map of the United States of North America, compiled from the latest ... Harvard Map Collection, Harvard College Library.
1862. Harvard Map Collection, Harvard College Library, Arnold, E. G., and Colton, G. Woolworth (George Woolworth), 1827-1901. This layer is a georeferenced raster image of the historic paper map entitled: Topographical map of the original District of Columbia and environs ... Harvard Map Collection, Harvard College Library.
1654. Harvard Map Collection, Harvard Library, Jacobsz, Theunis, 1632?-1679., and Wit, Frederik de. This layer is a georeferenced raster image of the historic paper map entitled: Pascaerte van Nieu Nederlant, Virginies, Nieu Engelant en Nova Franc... Harvard Map Collection, Harvard Library.
1861. Harvard Map Collection, Harvard College Library and H.H. Lloyd & Co. This layer is a georeferenced raster image of the historic paper map entitled: Military portraits ; Map of the seat of war ; Uniforms, arms, &c. It... Harvard Map Collection, Harvard Library.
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent U.S. Census Block Groups for the state. A Block Group (BG) is a cluster of census blocks having the same first digit of thei...
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,...
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 pe...
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 ...
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...
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...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the hydrographic features throughout the state. This category includes shorelines of all water regardless of the classifica...
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...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays landmark line features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) landmar...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays landmark point features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) landma...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays polygon landmark features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) land...
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...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays miscellaneous ground transportation features in the state. Features other than roads or railroads may be included in this l...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the non-visible features for the state. This layer contains various types of nonvisible lines used to maintain the topology...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer represents tangible physical features throughout the state. These features are neither transportation nor hydrographic in nature but...
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...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Primary Metropolitan Statistical Areas (PMSA) for the state. If an area that qualifies as a metropolitan area (MA) has 1 mi...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays a variety of railroad features for the state. Categories represented here include: Primary rail line: A railroad in this ca...
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...
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...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the line features for the state that have not yet been identified or have been classified as unknown. All complete chains, ...
1995. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Unified School Districts for the entire state. A unified school district is inclusive of kindergarten through twelfth g...
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...
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...
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. ...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. Annotations for features in dataset for time period during the US Civil War in the Confederate States. Vector data extracted from digital map provi...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. Coastal islands during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress at ht...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. Mountain ranges during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress at ht...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. Railroad routes during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress at ht...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. River locations during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress at ht...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. Settlement locations during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress ...
1864. Harvard University. Center for Geographic Analysis. and Bartholomew, John. State boundaries during the US Civil War in the Confederate States. Vector data extracted from digital map provided by the Library of Congress at h...
1797. Harvard Map Collection, Harvard College Library. This layer is a digitized geo-referenced raster image of a 1797 map of Maryland and Delaware drawn by D.F. Sotzmann. These Sotzmann maps (10 maps o...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent U.S. Census Block Groups for the state based on the ground condition of January 1, 1990. Block Groups (BGs) are clusters of ...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent U.S. Census Block Groups for the state based on the ground condition of January 1, 2000. Block Groups (BGs) are clusters of ...
1990. 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 statistical areas bounded on all sides by visib...
2000. 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 statistical areas bounded on all sides by visib...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Type A class roads thoughout the state. Feature Class A roads include: Primary roads with limited access (interstate hi...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons in this datalayer represent Census Collection Blocks for the entire state. To improve operational efficiency and geographic identifica...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent Congressional Districts for the state based on the boundaries established on January 1, 1990. Congressional districts are th...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons represent Congressional Districts for the state based on the congressional districts in effect at the time of Census 2000, which are t...
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 ...
2000. 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, 2000. The primary legal divisions of most states are ...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays County Subdivisions (Minor Civil Divisions) for the state, based on legal and statistical entities established on January 1...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays County Subdivisions (Minor Civil Divisions) for the state, based on legal and statistical entities established on January 1...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the hydrographic features throughout the state. This category includes shorelines of all water regardless of the classifica...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Key Geographic Locations (KGLs), as defined by the US Census Bureau, throughout the state. Essential attribute data include...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays landmark line features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) landmar...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Landmark Point Features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) la...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays polygon landmark features throughout the state. 'Landmark' is the general name given to a cartographic (or locational) land...
2000. 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...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays miscellaneous ground transportation features in the state. Features other than roads or railroads may be included in this l...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the non-visible features for the state. This layer contains various types of nonvisible lines used to maintain the topology...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer represents tangible physical features throughout the state. These features are neither transportation nor hydrographic in nature but...
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...
2000. 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, 2000. Places, for the reporting of decennial ce...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Primary Metropolitan Statistical Areas (PMSA) for the state. If an area that qualifies as a Metropolitan Area (MA) has more...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Public Use Microdata Areas (PUMAs) for the state. A public use microdata area is a decennial census area for which the ...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays a variety of railroad features for the state. Categories represented here include: Primary rail line: A railroad in this ca...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census Tracts for the state, based on entity boundaries established on January 1, 1990. Census tracts are small, relatively...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census Tracts for the state, based on boundaries established on January 1, 2000. Census tracts are small, relatively perman...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. Traffic analysis zones (TAZs) are special-purpose geographic entities delineated by state and local transportation officials for tabulating traffic...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Unified School Districts for the entire state. A unified school district is inclusive of kindergarten through twelfth g...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Urbanized Areas (UAs) for the state based on a January 1, 1990 ground condition. Note that the Census Bureau made signi...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Urbanized Areas (UAs) for the state based on a January 1, 2000 ground condition. Note that the Census Bureau made signi...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Voting Districts (VTDs) for the state based on a ground condition of January 1, 2000. Voting district (VTD) is the gene...
2000. 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. ...
2000. U.S. Department of Commerce, Bureau of the Census, Geography Division. The polygons in this datalayer represent ZIP Code Tabulation Areas (ZCTAs) for the entire state. ZCTAs are a new statistical entity developed by th...
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line voting districts for Maryland. The TIGER/Line Files are shapefiles and related database file...
