National Society Sons of the American Revolution
http://www.sar.org/

Rhode Island Daughters of the American Revolution
http://members.cox.net/ridar/

National Society of the Children of the American Revolution
http://www.nscar.org/

Rhode Island Genealogical Society
http://www.rigensoc.org/

Rhode Island Historical Society
http://www.rihs.org/

The Nathaneal Greene Homested
http://geocities.com/gmierka/code/frameset.html

The Rhode Island Historical Cemeteries Transcription Project
http://www.rootsweb.com/~rigenweb/cemetery/