Rockingham Home Owner’s Association
http://rockinghamhoa.net
Cannon Ridge Home Owner’s Association
http://cannonridgehoa.com/index.html
Maryland Manual On-Line: A Guide to Maryland Government:
http://www.mdarchives.state.md.us/msa/mdmanual/html/mmtoc.html
Neighborhood watch organizations:
http://www.ready.gov/citizen-corps
Maryland Department of Public Safety:
https://dpscs.maryland.gov/about/
Antietam Lodge No. 197
https://www.masonpost.com/md/antietam197/profile.html