Subjects
- Presidents -- United States -- Election -- 1920.1
- Presidents -- United States -- Election -- 1924.1
- Presidents -- United States -- Election -- 1928.1
- Presidents -- United States -- Election -- 1932.1
- Presidents -- United States -- Election -- 1936.1
- Presidents -- United States -- Election -- 1940.1
- Presidents -- United States -- Election -- 1944.1
- Presidents -- United States -- Election -- 1952.1
- Presidents -- United States -- Election -- 1960.1
- Presidents -- United States -- Election -- 1964.1
- Progressivism (United States politics)1
- Prohibition -- Michigan.1
- Prohibition -- United States.1
- Public health -- Michigan.1
- Public schools -- Michigan -- Ann Arbor.1
- Pygmies.1
- Radicalism -- Michigan -- Ann Arbor.1
- Radicalism -- United States.1
- Rain-making.1
- Recreation.1