Other sources of GIS information on the World Wide Web

Tennessee Spatial Data Server (sponsored by TN Federal GIS Users Group)

ESRI (authors of ARC/INFO and ArcView)

InterGraph

MapInfo

AutoDesk (authors of AutoCAD)

Gis.com

GIS World, Inc

Manifold Maps (some are free)

North Carolina Center for Geographic Information and Analysis

Missouri Spatial Data Information Service

GIS Data Depot

http://www.SpatialNews.com

Starting the Hunt: Guide to Mostly On-line and Mostly Free U.S. Geospatial and Attribute Data

Bentley (authors of MicroStation)

GIS Cafe