Subject
Ireland
343
Lighthouses
254
Lightships
71
Harbors
13
Lighthouse keepers
12
Sports
5
Antennas
4
Fishing boats
4
Radio
4
Coastlines
3
History
2
Round towers
2
Warships
2
English poetry
1
Irish authors
1
Management
1
Marine signaling
1
Megalithic monuments
1
Navigation
1
Ogham Stones
1
Rules and practice
1
Short stories, English
1