Subject
- Jazz18,759
- Constitutional law18,037
- Hymns, English17,630
- Jesus Christ16,829
- English language16,244
- World War, 1914-191816,122
- Science15,677
- Sermons, English15,664
- Art15,122
- Human rights14,994
- Children14,791
- English literature14,530
- American literature14,306
- Political science13,721
- Operas13,382
- Democracy13,235
- Great Britain. Foreign Office13,134
- National security13,109
- English poetry13,010
- American poetry12,986