Shapefiles and data at the census tract, county, state, and other geographic levels going back to 1790 for counties, and 1910 for tracts. Also includes some data for downloading.

GIS Shapefiles from the City of Philadelphia. Includes building outlines, street centerline files, administrative boundaries, aerial photos, parcels, curbs, and contours.

The Cartographic Modeling Lab provides shapefiles for download of several Philadelphia files, most notably the Philadelphia Neighborhoods file used in the creation of the Neighborhood Base.

Pennsylvania Spatial Data Access Center files on Philadelphia. Includes shapefiles from the City of Philadelphia, as well as some state resources. Important files here are Street Centerlines, local area boundaries (planning commission, police, councilmanic districts) and aerial photos.

Shapefiles and data at the census tract, county, state, and other geographic levels going back to 1790 for counties, and 1910 for tracts. Also includes some data for downloading.

Pennsylvania Spatial Data Access Center files on Philadelphia. Includes shapefiles from the City of Philadelphia, as well as some state resources.

Huge map of baghdad

The war in Iraq has thrust GIS and Geospatial technologies into the limelight. Each day the public is presented with maps, imagery, and other spatial data products in an effort to provide a visual representation of the latest developments. The following directory provides some valuable pointers and descriptions of companies that are providing GIS-based solutions to help the public follow the war in Iraq. If you know of additional resources that are of interest please send us some details.

Lists data from NACJD that can be used in GIS.

LeadDog creates and maintains GIS street and road maps for Iraq, the Middle East, Africa, Mexico, and the rest of Latin America.  We offer GIS and postcode maps for virtually every country in the world.

The US Census provides thematic maps at various levels of geography and for many data points.

Twentieth century conditions in maps.

The map images as well as the satellite imagery belong to Google and are pulled from maps.google.com. The data is extracted from the 2000 United States Census and can be downloaded from www.census.gov.

The North Carolina Geospatial Data Archiving Project is just one of many recent or current projects focused on the issue of preservation of digital geospatial data. Following is a brief overview of other projects.

The joint project of the North Carolina State University Libraries and the North Carolina Center for Geographic Information and Analysis will focus on collection and preservation of digital geospatial data resources from state and local government agencies in North Carolina.

The objectives of the project include:

• Identification of available resources through the NC OneMap data inventory
• Acquisition of at risk geospatial data, including static data such as digital orthophotos as well time series data such as local land records and assessment data
• Development of a digital repository architecture for geospatial data, using open source software tools such as DSpace
• Enhancement of existing geospatial metadata with additional preservation metadata, using Metadata Encoding and Transmission Standard (METS) records as wrappers
• Investigation of automated identification and capture of data resources using emerging OpenGeospatial Consortium specifications for client interaction with data on remote servers
• Development of a model for data archiving and time series development

GRADE will investigate and report on the technical and cultural issues around the reuse of geospatial data within the JISC IE in the context of media-centric, informal and institutional repositories.

The aim of GRADE is to lay the foundations for a sustainable infrastructure (both cultural and technical) that underwrites the communities' substantial and ongoing investment in the utilisation of geospatial resources within the learning, teaching and research environments of UK academia.

Geographic Information Systems (GIS) software relies on data sets that cover the whole planet. To cope with the flood of GIS data and their formats, programmers have created several open source libraries and GIS suites. This article gives a short introduction to the range and depth of GIS tools and libraries available for UNIX® and Linux®.

EDINA is actively seeking global and regional geographic datasets which can be made available to the UK Higher and Further Education community. Many global datasets are now being published via web map servers and are accessible through the use of interoperability standards. EDINA have created a Web Map Viewer, which will allow anyone with Internet access to view geographic data available through web map servers around the World.

Census page listing Hurricane Katrina related info.

List of data sets available from USUS. Huge and quite up to date.

List of data sets available from USUS. Huge and quite up to date.

he World Health Organization Collaborating Center for Remote Sensing and GIS for Public Health (WHOCC) at LSU is dedicated to the application and advancement of geographic information science (GISc) and geographic technologies for Public Health and disease modeling.

From LSU, this site links to many federal and local sources of data and maps.

Geospatial Data from the State of Louisiana. Download Census data, topo maps, digital elevation models, DOQQ's.

Federal Gateway to information about Katrina in New Orleans. Includes maps, GIS data, interactive mapping packages, etc.

Collection of data and maps from UCGIS related to Katrina and New Orleans