American Institute of Architects, Center for Communities by Design
American Planning Association
Association of Metropolitan Planning Organizations
Center for Neighborhood Technology
Congress for the New Urbanism
Delaware Valley Smart Growth Alliance
Enterprise
Environmental Finance Center Network
Environmental Law Institute
Fannie Mae
Florida Department of Health
Funders' Network for Smart Growth and Livable Communities
Institute of Transportation Engineers
International City/County Management Association (ICMA)
Local Government Commission
Local Initiatives Support Corporation
NACo Center for Sustainable Communities
National Association of Local Government Environmental Professionals
National Association of Realtors
National Center for Smart Growth Research and Education
National Multi-Housing Council
National Oceanic and Atmospheric Administration
National Trust for Historic Preservation
Natural Resources Defense Council
Northeast-Midwest Institute
Rails to Trails Conservancy
Scenic America
Smart Growth America
State of Maryland
Surface Transportation Policy Project
Sustainable Communities Network
The Conservation Fund
Trust for Public Land
U.S. Environmental Protection Agency
Urban Land Institute
Virgina Tech Metropolitan Institute and Urban Affairs & Planning Program