Materia
- American History: 20th Century History 98
- British and Irish Medieval History History 91
- European Early Modern History History 91
- Imperialism and Colonialism 86
- European Medieval History History 85
- Political History 82
- World Modern History History 75
- American History: 19th Century History 66
- European Medieval History 65
- European Early Modern History 63
- Archaeology 58
- Cultural History History 58
- World Modern History 52
- Archaeology History 50
- History of Religion 49
- British and Irish Early Modern History 47
- History of Religion History 42
- Environmental History 36
- Middle East History History 35
- History of Ideas 34