Materia
- American History: 19th Century 8
- American History: 19th Century History 8
- British and Irish Early Modern History History 8
- Environmental History 8
- History of Religion 7
- American History: 20th Century History 5
- British and Irish Medieval History History 5
- European Medieval History 5
- European Medieval History History 5
- Social History 5
- World Modern History 5
- British and Irish Medieval History 4
- Cultural History History 4
- Political History History 4
- Russian and Former Soviet Union History 4
- History of Ideas History 3
- History of Religion History 3
- Middle East History History 3
- World Modern History History 3
- African History 2