The California Preservation Foundation CPF is a nonprofit organization dedicated to preserving California’s diverse cultural heritage and historic places.

Heritage Documentation Programs include the Historic American Buildings Survey and Engineering Record and the Historic American Landscape Survey.

The International Council on Monuments and Sites is an international organization dedicated to conservation of the world’s monuments and sites.

NAOP is the only national organization solely dedicated to preserving the Olmsted legacy by providing advocacy, research, and education.

NAPC is a nonprofit organization dedicated to building strong local preservation programs through education, advocacy, and training.

The NCSHPO coordinates SHPOs and their staff and communicates and represents the SHPOs with federal agencies and national preservation organizations.

Each of the 2500+ National Historic Landmarks represents an outstanding aspect of American history and culture, whether a building, site, or district

The Cultural Resource Geographic Information Systems Facility (CRGIS) uses GIS and GPS technologies in documenting and managing cultural resources.

The American Battlefield Protection Program promotes the preservation of significant historic battlefields associated with wars on American soil.

The Civil War Trust is a non-profit organization devoted to the preservation of America's endangered Civil War battlefields.