- Preservation MA
- The American institute for Conservation (AIC)
- Association of Gravestone Studies (AGS)
- National Preservation Institute (NPI)
- Cemetery Conservators for United Standards (CCUS)
- National Center for Preservation Technology and Training (NCPTT)
- National Park Service
- Chicora Foundation
- New Hampshire Old Graveyard Association (NHOGA)
- Jonnathan Appell & Atlas Preservation
