http://www.delwebb.com/

http://www.seniorsforliving.com/

http://www.americansrcommunities.com/

http://www.seniorcommunityguide.com/

http://www.seniorresource.com/

http://www.columbiares.com/communities/senior_communities.html

http://www.lesleyseniorcommunities.org/

http://www.keystonesenior.com/communities.html

http://www.dexknows.com/business_profiles/crest_view_senior_communities-b414083

http://www.ced-concord.com/index.cfm?fuseaction=concord.senior