Bureau of Planning and Sustainability

http://www.portlandonline.com/bps/index.cfm?

Portland State University for Sustainability

http://www.pdx.edu/sustainability/

Center for Academic Excellence, Portland State University

http://www.pdx.edu/cae/

Status of Volunteering in Portland

http://www.volunteeringinamerica.gov/OR/Portland

Community Social Capital Surveys

http://www.ropercenter.uconn.edu/data_access/data/datasets/social_capital_community_survey.html#survey_methodology