by National Association of Cost Accountants (U.S.)

1923

by United States. National Bureau of Standards

1928

by National Fire Protection Association

1919

by National Electric Light Association

1916

by United States. National Labor Relations Board

2001

by National Association of Retail Druggists (U.S.)

1926

by National Marine Engineers' Beneficial Association (U.S.)

1922

by National Association of Real Estate Boards

1925

by National Association of Real Estate Boards

1926

by National Live Stock Producers Association

1927

by National Electric Light Association

1922

by National Electric Light Association, National Electric Light Association. Convention

1928