Professor Zachary Schrag is a historian of the twentieth-century United States and a professor of history at George Mason University. His specialities are: history of technology, policy history, transportation history, urban history, and oral history. In this episode, we discuss what history means and his book, the Princeton guide to historical research.

Key points include:

01:40: History as the study of people

07:23: Internal contradictions

19:48: How a historian organises information

30:04: Recommendations for history students

37:26: History's influence on politics

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