- Bills, Legislative.3
- Biplanes--Piloting.3
- Birth Weight, Low3
- Botanists--South Carolina--History--19th century3
- Brown, Walter F. (Walter Folger), 1869-1961.3
- Capitol Hill (Washington, D.C.)3
- Cavalry--United States.3
- Children--United States.3
- Choirs (Music)3
- Constitutional amendments.3
- Coolidge, Calvin, 1908-1924.3
- Coolidge, John, 1906-2000.3
- Daniels, Josephus, 1862-1948.3
- Davis, Dwight Filley, 1879-1945.3
- Davis, James J. (James John), 1873-1947.3
- Dawes, Charles Gates, 1865-1951.3
- Denby, Edwin, 1870-1929.3
- Diplomacy.3
- Dogs.3
- ERAmerica (Organization)3