Historic preservation agencies:

Advisory Council on Historic Preservation

California Native American Heritage Commission

City of Sacramento Preservation Commission

California Office of Historic Preservation

Society for American Archaeology

Society for California Archaeology

Local libraries and archives:

California State Archives

California State Library

California State Railroad Museum and Library

Caltrans Library

Sacramento Archives and Museum Collection Center (SAMCC)

Sacramento County Public Law Library

Sacramento Public Library, Sacramento Room

Sacramento State University Library

UC Davis University Library

U.S. Department of the Interior, Bureau of Land Management, Public Room

Online surveys and registers:

Caltrans Historic Bridge Survey

California Historical Landmarks

National Register of Historic Places

Online tools for researchers:

About CHRIS: the California Historical Resources Information System

LUPIN: county-by-county land use and planning information

Maptech (USGS topographic maps)

Office of Historic Preservation Publications and DPR 523 Forms