The following guides and manuals provide invaluable information pertaining to “best practices” in recording, preserving, maintaining and restoring historic burying grounds and cemeteries, which BGPG adheres to. These examples are drawn from a variety of sources, including the National Park Service (Dept. of the Interior) and State Historic Preservation Offices (SHPOs).
Massachusetts Department of Conservation & Recreation (DCR)
Michigan State Historic Preservation Office
National Park Service: Technical Preservation Services
In addition to these online resources, a variety of organizations provide guidance and support in recording and preserving historic burying grounds and cemeteries, notably the AGS, a nationwide organization founded in 1977.
These PDFs provide additional insight into the study of historic grave markers, especially on Long Island: