The Regional Association of Preservation
The Regional Alliance for Preservation (RAP) began in February 1997 as a pilot project of the Commission on Preservation and Access (Washington, DC) to foster cooperation among the Preservation Field Service programs funded by the National Endowment for the Humanities.

Association of Restorers
It is the mission of the AOR, Association of Restorers Inc™, to increase the awareness of choice to conserve, refurbish or restore historical works of art, household furnishings and architectural constructions.

Association for Gravestone Studies
The Association for Gravestone Studies (AGS) was founded in 1977 for the purpose of furthering the study and preservation of gravestones. AGS is an international organization with an interest in gravemarkers of all periods and styles.

Canadian Conservation Institute
From leading-edge research to innovative approaches, the Canadian Conservation Institute (CCI) is recognized as a pioneer in the conservation of cultural heritage.

National Park Service
National Park Service. Explore America's cultural resources - buildings, landscapes, archeological sites, ethnographic resources, objects and documents, structures and districts.

National Trust for Historic Preservation
As the leader of America’s dynamic preservation movement, the National Trust for Historic Preservation has worked for more than half a century to save the historic buildings, neighborhoods, and landscapes that form our communities and enrich our lives.

Heritage Preservation
Heritage Preservation works to ensure the preservation of America's collective heritage. Our programs and publications provide advice and guidance on the proper care and maintenance of anthropological artifacts, historic objects, family heirlooms, and natural science specimens.

Smithsonian Center for Materials Research and Education
Originally established in 1963, principally to provide technical support to the Smithsonian museums in the analysis and conservation needs of the collections, the Smithsonian Center for Materials Research and Education (SCMRE) moved in 1983 to the then newly completed Museum Support Center, to embark on a mission of independently formulated programs in research and education in conservation and scientific studies of collection materials, serving a nationwide and international professional audience.

United Kingdom Institute for Conservation
The United Kingdom Institute for Conservation exists to foster excellence in the provision of conservation services, to raise awareness of the importance of conservation skills, and to provide information and advice to those requiring conservation services. Its purpose is to benefit the public and the quality of care of the nation’s heritage.

Western Association for Art Conservation
WAAC, the Western Association for Art Conservation, is a nonprofit membership organization for professional conservators. WAAC was founded in 1975 to bring together conservators practicing in the western United States to exchange ideas, information and news. Although WAAC is specifically a regional organization for the western states including Alaska and Hawaii, any individual or institution may become a member regardless of location or national boundary. All payments to WAAC, however, must be drawn on a US bank in US dollars.