Websites
Smart Growth Leadership Institute, http://www.sgli.org
National Charrette Institute, http://www.charretteinstitute.org
Pioneer Valley Planning Commission, "Valley Vision 2," http://pvpc.org/val_vision/index.html (Look here for regional importance of master plans)
Smart Growth America, http://www.smartgrowthamerica.org
Local Government Commission, "Center for Livable Communities,"
http://www.smartgrowthamerica.org
Lincoln Institute of Land Policy, http://www.lincolninst.edu/index-high.asp (Look at "Visual Tools for Planners" and "Visualizing Density" under Resources and Tools subsection)
American Planning Association, http://www.planning.org
Books
Community Planning: An Introduction to the Comprehensive Plan,
Eric Damian Kelly, Barbara Becker. (Washington, DC: Island Press, 2000)
Small Town Planning Handbook, Daniels, T. L., Keller, J. W., & Lapping, M. B. (Chicago: American Planning Association, 3rd ed. 2007)
Citizen's Guide to Planning, Herbert Smith. (Published by APA Planners Press, 1993)
Complete Guide to Zoning, Dwight Merriam. (McGraw-Hill, 2005)
Crossroads, Hamlet, Village, Town: Design Characteristics of Traditional Neighborhoods, Old and New (PAS 523/524), Randall Arendt. (Chicago: American Planning Association, 1999)
Visualizing Density, Julie Campoli, Alex MacLean. (Cambridge: Lincoln Institute of Land Policy, 2007)
Sprawl Costs: Economic Impacts of Unchecked Development, Robert Burchell et al. (Washington, DC: Island Press, 2005)