Subject
History
62
Foreign relations
44
World War, 1939-1945
42
Secret service
41
Cryptography
40
Cryptographers
39
Irish Americans
5
Societies, etc
5
Diaries
3
Autonomy and independence movements
2
Libraries
2
Bibliography, National
1
Civilization
1
Dictionaries, French
1
English poetry
1
Gaelic language (Irish)
1
Home rule
1
Irish authors
1
Irish newspapers
1
Irish-Americans
1
Language and languages
1
Languages, Modern
1
Manuscripts
1
Manuscripts, Irish
1
Newspapers on microfilm
1
Periodicals
1
Political activity
1
Politics and government
1
Sources
1
Study and teaching
1
Women poets, Irish
1