by American Historical Association

1921

by American Association of Agricultural College Editors

1916

by Association of State Universities and Land-Grant Colleges. Convention, American Association of Land-Grant Colleges and State Universities. Convention, Association of American Agricultural Colleges and Experiment Stations. Convention, National Association of State Universities and Land-Grant Colleges. Convention

1917

by Association of American Agricultural Colleges and Experiment Stations

1915

by American Economic Association. Annual Meeting

1926

by Association of American Agricultural Colleges and Experiment Stations. Annual Convention

1907

by American University (Washington, D.C.)

1914

by American Association for the Advancement of Science

1929

by American Soil Survey Association

1929

by American Library Association

1915

by American Library Association. General Meeting

1915

by Association of American Agricultural Colleges and Experiment Stations. Convention

1919