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Population and Sprawl Data
U.S. Bureau of the Census
U.S. Department of Agriculture
Natural Resources Conservation Service

Congressional Voting Records and Legislative Descriptions
Library of Congress, Congressional Record, and U.S. House and U.S. Senate websites
Rosemary Jenks, J.D. Harvard Law School

Immigration Data
Immigration and Naturalization Service
U.S. Bureau of the Census
Vernon Briggs, Jr., labor economist, School of Industrial and Labor Relations, Cornell University: Mass Immigration and the National Interest (N.Y.: M.E. Sharpe, 1992).

Federal Commissions
Leon Bouvier, Ph.D., Scheuer Committee; Select Commission on Immigration Policy and the National Interest
Lindsay Grant, Ph.D., Global 2000 Report to the President

Analysis of Sprawl

Urban Planning Oversight
Earl M. Starnes, Ph.D., professor emeritus, urban and regional planning, University of Florida
Eben Fodor, Urban planning consultant, Eugene (OR); author, Better not Bigger: How to Take Control of Urban Growth and Improve Your Community
Gabor Zovanyi, Ph.D, professor of urban planning, Eastern Washington University Robert Seamanassociate professor of environmental science, New England College; executive committee, American Society of Civil Engineers' Urban and Development Division
Ruth Steiner, Ph.D., professor of urban and regional planning, University of Florida

Statistical Oversight
Alan J. Truelove, Ph.D., statistician, retired professor, University of the District of Columbia
Ben Zuckerman, Ph.D., professor of physics and astronomy, UCLA; member, UCLA Institute of the Environment
David Simcox, director, Migration Demographics
Dick Schneider, chair, Sierra Club Northern California Regional Sustainability Task Force
Leon Bouvier, Ph.D., demographer, Old Dominion University (VA)
Mark C. Thies, Ph.D., P.E., professor of chemical engineering, Clemson University
Marshall Cohen, Ph.D., professor emeritus of astronomy, California Institute of Technology
Paul Nachman, Ph.D., physicist
Scott Briles, Ph.D., engineer, Los Alamos National Laboratory, University of California
Steven A. Camarota, Ph.D., public policy analyst
William E. Murray, Jr., Ph.D., physicist
Michael J. Mueller, Ph.D., natural resource economist

Environmental and General Oversight
Albert Bartlett, Ph.D., professor emeritus of physics, University of Colorado
Betty B. Davis, Ph.D., psychologist
Bill Smith, Ph.D., dean, College of Global Economics, EarthNet Institute
Craig Diamond, adjunct faculty, environmental studies, Florida State University; technical advisor to the Sierra Club carrying capacity campaign
David Pimentel, Ph.D., professor of ecology and agricultural sciences, Cornell University
Diana Hull, Ph.D., behavioral scientist, retired, Baylor College of Medicine
Edward G. Di Bella, adjunct faculty, Grossmont Community College (CA); president, Friends of Los Penasquitos Canyon Preserve
George Wolford, Ph.D., president, EarthNet Institute
Herbert Berry, Ph.D., retired associate professor of computer information systems, Morehead State University (KY)
James G. McDonald, attorney, civil engineer
Jeffrey Jacobs, Ph.D., National Academy of Sciences
John Bermingham, former Colorado state senator
John Rohe, attorney; board, Conservation News Service
Linda Thom, retired government budget analyst, Santa Barbara County (CA)
Michael Hanauer, member, Vision 2020, growth management project of Lexington, (MA)
Ross McCluney, Ph.D., principal research scientist, Florida Solar Energy Center, University of Central Florida
Steve Miller, former Las Vegas councilman, Clark County (NV) Regional Transportation Commissioner
Stuart Hurlbert, Ph.D., professor of biology, San Diego State University
Terry Paulson, Mayor Pro-tem, Aspen (CO) City Council
Tom Reitter, Livermore (CA) City Council

* Affiliations listed for identification purposes only.

Economics
Most economics information on this website either is taken directly from government data, has been analyzed by the Center for Immigration Studies (a Washington-based think tank), was edited by W.W. Norton & Company (the prestigious New York publisher), or was reviewed by labor economist Vernon Briggs of Cornell University. In most cases, citations are provided to allow you to do your own checking.

Environmental
Contributing, reviewing or endorsing various parts of the website that deal with the role of U.S. population growth and environmental issues are:

Leon Kolankiewicz is a national environmental/natural resource planner and a former planner with the Orange County (CA) Environmental Management Agency. He has a B.S. in forestry and wildlife management from Virginia Tech and an M.S. in environmental planning and natural resources management from the University of British Columbia. He has worked as an environmental professional for more than two decades, including stints with the U.S. Fish and Wildlife Service, National Marine Fisheries Service, Alaska Department of Environmental Conservation, Alaska Department of Fish and Game, University of Washington, University of New Mexico, and as a national parks technical advisor with the Peace Corps in Central America. He has written more than 70 articles and reports and is the author of Where the Salmon Come to Die: An Autumn on Alaska's Raincoast (Boulder, Colorado: Pruett, 1993).

Douglas La Follette is Secretary of State of Wisconsin. He organized the first Earth Day in Wisconsin and is a former National Board Member of Friends of the Earth and a former professor of chemistry and ecology.

Gaylord Nelson (1916 - 2005) is a former Wisconsin State Senator, Governor, and U.S. Senator (1948-81). He is the founder of Earth Day and is currently Counselor to The Wilderness Society.

Stuart Hurlbert, Ph.D., professor of Biology, San Diego State University; Director,Center for Inland Waters