by National Fire Protection Association

1916

by National Convention of Insurance Commissioners (U.S.)

1917

by United States. Council of National Defense

1918

by National Electric Light Association

1906

by National Electric Light Association

1907

by National Electric Light Association. Convention

1907

by National Electric Light Association

1907

by National Safety Council. Safety Congress

1921

by National Brick Manufacturers' Association of the United States of America

1918

by National Board of Fire Underwriters

1877

by National Safety Council

1921

by National Fire Protection Association

1924