Rhode Island Historical Preservation and Heritage Commission
- The state agency for historical preservation and heritage programs explains its policies and provides a list of Rhode Island properties on the National Register.
- http://www.rihphc.state.ri.us/

Preservation Society of Newport County
- Non-profit organization which saved and opened to the public the summer homes of the 19th-century New York elite. Visitor information, events, news, membership.
- http://newportmansions.org/