by National Conference of Commissioners on Uniform State Laws

1914

by United States. Council of National Defense

1917

by National Association of Railway and Utilities Commissioners (U.S.). Annual Convention

1922

by National Electric Light Association

1913

by National Child Labor Committee (U.S.), National Child Labor Committee (U.S.). Conference

1905

by National Fertilizer Association (1925-1955)

1926

by National Conference of Commissioners on Uniform State Laws. Meeting

1916

by National Board of Trade (U.S.)

1906

by National Agricultural Library (U.S.)

1913

by National Association of Railway Commissioners (U.S.). Annual Convention

1916

by National Association of Railway and Utilities Commissioners (U.S.). Annual Convention

1923

by National Conference of Commissioners on Uniform State Laws

1929