Mason Contractors Association of America A national trade association representing mason contractors and suppliers in national legislative affairs, codes and standards, workforce development, education, market promotion and general industry advocacy. www.masoncontractors.org

Minnesota Concrete & Masonry Contractors Association Masonry and Concrete Contractors, working with their allied Industry Members, to build a strong Minnesota. www.mcmca.com

MasonrySystems.org Offers resources to guide you in every phase of your construction project and assist in your search for a perfect masonry structure. www.masonrysystems.org

Brick Industry Association National trade association representing distributors and manufacturers of clay brick and suppliers of related products and services. www.gobrick.com

National Concrete Masonry Association National trade association representing distributors and manufacturers of clay brick and suppliers of related products and services. www.ncma.org