American Institute of Architects - St. Louis Chapter

American Society For Testing and Materials

Brick Industry Association

Bricklayers' Local No. 1 of Missouri

Building Stone Institute

Cast Stone Institute

Construction Specifications Institute - St. Louis Chapter

Heartland Brick Council

International Masonry Institute

Mason Contractors Association of America

Mason Contractors Association of St. Louis

The Masonry Society

MasonrySystems.Org

Masonry Veneer Manufacturers Association

National Concrete Masonry Association

Structural Engineers Association of Kansas & Missouri

Structural Engineering Institute - St. Louis Chapter