by National Association of Marketing Officials (U.S.)

1929

by American National Live Stock Association

1899

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

1921

by National Association of Marketing Officials

1928

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

1911

by National Canners Association. Research Laboratories

1923

by National Association of Cotton Manufacturers

1923

by Grain and Feed Dealers National Association

1925

by National Agricultural Library (U.S.)

1974

by National Library of Medicine (U.S.)

by National Lumber Manufacturers Association

1913

by National Association of Marketing Officials

1920