National Trust for Historic Preservation
DC Preservation League
Natural Stone Institute
National Terrazzo and Mosaic Association (NTMA)
Washington Building Congress (WBC)
Associated Builders and Contractors (ABC), Metro Washington
Association of General Contractors (AGC), Metro Washington
Society of American Military Engineers (SAME)
American Shotcrete Association (ASA)
American Concrete Institute (ACI)

These groups serve as a forum to acknowledge and share successful methods, projects and ideas in the stone and restoration industry.