Geography On-Line!

A Guide to Spatial Data Sources on the World Wide Web

Starting Points	Texas Data	Organizations
The Geography Network	Texas Natural Resources Information System (TNRIS)	American Congress on Surveying and Mapping
The GIS Portal!	Lower Neches Valley Authority	American Society for Photogrammetry and Remote Sensing
The WWW Virtual Library: Cartography, Geodesy, and GIS	Texas Department of Transportation	Geospatial Information & Technology Association
General Sources	Texas Historical Commission	URISA (Urban and Regional Information Systems Association)
GIS Data Depot A Repository of Spatial Data Sponsored by Geo Community	Texas General Land Office	U S Geological Survey
Global Spatial Data Infrastructure	National Data	National Mapping Information
ESRI, Inc. / Free Software, Data and Resources	Environmental Protection Agency: Surf Your Watershed	National Geospatial Data Clearinghouse
Blue Marble Geographics	Federal Emergency Management Agency	USGS SDTS Information Site
Prentice-Hall, Inc./ Getting Started with Geographic Information Systems, by Keith C. Clarke/ Chapter 5/ GIS Resources	US Census Bureau	National Satellite Land Remote Sensing Data Archive
GIS World, Inc		Mapping Applications Center
		Mid-Continent Mapping Center
		Rocky Mountain Mapping Center
		Western Mapping Center
		National Elevation Dataset
		National Wetlands Research Institute