American Society of Landscape Architects
http://www.asla.org/

American Society of Landscape Architects - Oregon Chapter
http://www.aslaoregon.org/

City of Eugene Parks and Open Space
http://www.eugene-or.gov/

City of Portland 2004 Stormwater Management Manual
http://www.portlandonline.com/bes/index.cfm?c=35122

Native Plant Society of Oregon, Emerald Chapter
http://www.emeraldnpso.org/

University of Oregon Department of Landscape Architecture
http://darkwing.uoregon.edu/~landarch/

American Planning Association
http://www.planning.org/

American Institute of Architects
http://www.aia.org/

Canadian Society of Landscape Architects
http://www.csla.ca/eng/

U.S. Green Building Council
http://www.usgreenbuildingcouncil.com

The Urban Land Institute
http://www.uli.org/