Materia
- Historiography 33
- Russian and Former Soviet Union History 32
- Social History History 31
- American History: early to 18th Century History 30
- Asian History History 26
- History of Ideas History 26
- Political History History 26
- Military History History 24
- Economic History 22
- British and Irish Medieval History 20
- Economic History History 18
- History of Science, Technology, and Medicine History 15
- World Early Modern History History 15
- World Medieval History 14
- Latin American History History 12
- Historiography History 10
- World Early Modern History 10
- Indian History 9
- American History: Civil War History 6
- African History 5