Coachella Valley Archaeological Society (CVAS)

San Diego Archaeological Center

Maturango Museum, Ridgecrest

Society for California Archaeology

The Pacific Coast Archaeological Society

Society for American Archaeology

The Archaeological Conservancy

Crow Canyon Archaeological Center

The Earthwatch Institute

American Anthropological Association  

The Cotsen Institute of Archaeology

The Bowers Museum

The Wildlands Conservancy
Web sites dealing with Pacific Coast and Southwest archaeology--  
many of which offer volunteer opportunities.
Save the Past for the Future ~ Protect Archaeological and Historic Sites