回复：from this source of the picture, I found those webs sites for

http://sociology.ucsc.edu/whorulesamerica/power/wealth.html
http://sociology.ucsc.edu/whorulesamerica/power/class_domination.html
http://sociology.ucsc.edu/whorulesamerica/power/social_security.html
http://sociology.ucsc.edu/whorulesamerica/local/growth_coalition_theory.html
...