by National Fertilizer Association (1925-1955), National Fertilizer Association (1925-1955).

1930

by Association of Southern Agricultural Workers. Convention

1912

by Association of American Agricultural Colleges and Experiment Stations

1915

by National Association of State Universities and Land-Grant Colleges

1923

by Association of Land-Grant Colleges. Convention

1925

by A. W. Fuchs, American Public Health Association. Committee on Municipal Health Department Practice, James Gayley Townsend

1923

by Association of Land-Grant Colleges. Annual Convention

1922

by Indian Economic Association. Annual Conference

1924

by National Association of State Departments of Agriculture. Convention

1921

by American Country Life Association

1921

by Association of Southern Agricultural Workers

1909

by Association of Southern Agricultural Workers. Rural Sociology Section. Meeting

1927