R.I. Gen. Laws § 23-18-10.1: Registering historical cemeteries.

In addition to the records and indexes now required to be maintained by every recorder of deeds in all cities and towns, the recorder of deeds in every city and town shall maintain a register of all historical cemeteries located within the city or town. The tax assessor of each city or town shall note the location of each historical cemetery so registered on the appropriate tax assessor’s map with a symbol consisting of the letters “CEM” inside a rectangle.