The University of Arizona

• The University of Arizona Home Page
• College of Agriculture and Life Sciences (CALS)
• CALS Communication and Cyber Technologies
• Arizona Remote Sensing Center

Government Sites

• Arizona Land Resources Information System
• Pima County GIS
• City of Tucson GIS

Online Libraries for Geographically-referenced Information

• Open Geoportal

Consortiums and Clearinghouses

• GIS Jobs Clearinghouse
• The University Consortium for Geographic Information Science (UCGIS)