Written by one of the most eminent, (if sometimes disputed) historians of the 20th century, this book, originally published in 1939, gives guidance to the would-be historian on historical sources, research and evidence. Although inevitably a product of its time, this volume nonetheless remains one of the most comprehensive guides to historiograhy.

1. What is History? 2. On Sources and Evidence 3. On the Testing of Authorities: Chronicles and Narrative Histories 4. On the Testing of Authorities: Autobiographies, Biographies, Memoirs, Letters, etc 5. Of Historical Perspective in General 6. Of Historical Perspective - The Pessimists and the Optimists 7. Of Historical Perspective - Concerning Cataclysms, Political and Moral 8. Of Individuals and 'Processes' in History 9. A Plea for Military History 10. On History as a Hindrance, and Poisonous History 11. Concerning Researchers and Research 12. History at Oxford 13. Some Humours of History 14. On General Lessons and Morals