| Book of Inishowen : guide book and conspectus of information relating to the barony of Inishowen, county Donegal | Swan, Harold | Monograph or Collective Volume | William Doherty | 1938 |
| Buncrana Presbyterian Church : Presbyterianism in Ulster | Swan, Harold | Monograph or Collective Volume | Sabbath School Society for Ireland | 1961 |
| Highlights of the Donegal highlands | Swan, Harold | Monograph or Collective Volume | Carter Publications | 1955 |
| Romantic Inishowen | Swan, Harold Percival | Monograph or Collective Volume | Hodges Figgis | 1948 |
| Romantic stories and legends of Donegal | Swan, Harold | Monograph or Collective Volume | Carter | 1965 |