Electronic Databases 

Significant Features of the Property Tax (Lincoln Institute of Land Policy)
IPTI Xtracts (global property tax news)
State Tax Profiles (by Poer & Company)
Property Tax Calendar by State (by Poer & Company)
HUD User (Housing policy and community development database)
ESRI GIS Citation Database
Assessors by State Directory
Assessor Links USA Directory
Lawyer Locator (Martindale-Hubbell)
Find an Appraiser (Appraisal Institute)
Open Government Guide (open record laws for all states)
CyberCemetery (historical government docs)
ArchiveGrid (historical government docs)
Tax Policy Center - State & Local Finance Data Query System
American Housing Survey
Building for Environment and Economic Sustainability Software

Research and Educational Organizations/Universities

Brookings Institute: Map of Property Taxes by County
Colleges/Universities with Real Estate Programs
Directory of Real Estate Research Centers (National Assoc. of Realtors)
University of British Columbia, Real Estate Division
George Washington University, Institute of Public Policy
Real Estate Research Corporation
Pew Center on the States
George Mason University, Center for Regional Analysis
Texas A & M University, Real Estate Center
American Real Estate Society (ARES)

Associations/Organizations

American Society of Appraisers (ASA)
Appraisal Institute (AI)
Appraisal Institute of Canada (AIC)
Appraisers Association of America (AAA)
Canadian Property Tax Association
Directory of Assessment Organizations (Compiled by Richard L. Sanderson)
Federation of Surveyors Commission 9 (FIG) - International
Federation of Valuers (FECOVAL) in Mexico
The Institute of Revenues Rating and Valuation (IRRV)
Institute for Professionals in Taxation (IPT)
International Property Tax Institute (IPTI)
International Right of Way (IRWA)
National Association of Counties
Thai Appraisal Foundation
The European Group of Valuers' Associations (TEGoVA)
The Valuation Office Agency (VOA)
World Association of Valuation Organizations (WAVO)
Royal Institute of Chartered Surveyors (RICS)
Urban Land Institute

Foundations

Lincoln Institute of Land Policy (LILP)

Government Links

Securities and Exchange Commission
U.S. Census Bureau
Directory of Federal Statistics
United States Postal Service
Bureau of Land Management
National Geodetic Survey
U. S. Geological Survey
State Court Web Sites For All 50 States
State Legislatures and Legislators Look-Up
State Real Estate Appraisers Regulatory Boards for all 50 States
GovTrack - Portal for searching state legislation
StateScape - Legislative monitoring of all 50 states

Specialty & Related Associations/Organizations

American Institute of Certified Planners
American Planning Association
American Society for Photogrammetry and Remote Sensing
Association of Appraiser Regulatory Officials (AARO)
Association of Computers and Taxation
American Society of Farm Managers and Rural Appraisers
Government Revenue Collection Association
Property Records Industry Association
Society of Golf Appraisers
Urban and Regional Information Systems Associations

Valuation Standards Organizations

Tax Executives Institute, Inc.
The Appraisal Foundation (TAF)
International Valuation Standards Committee (IVSC)

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