| 'Eirí amach beag na bliana 1793' | de Vál, Seamus S. | Article in Journal | | 1988 |
| A glance at five Cistercian Abbeys of the South-East | de Vál, Seamus S. | Article in Journal | | 2008 |
| A journalist bishop in New Zealand | De Vál, Seamus S. | Article in Journal | | 2006 |
| Ábhair sagart agus an t-Eirí amach | de Vál, Seamus S. | Article in Journal | | 1998 |
| Beirt shagart 1798 | de Vál, Seamus S. | Article in Book | | 1998 |
| Bishops of Ferns | De Vál, Seamus S. | Article in Book | | 1999 |
| Bun Clóidí : a history of the district down to the beginning of the 20th century | de Vál, Seamus S. | Monograph or Collective Volume | Privately printed | 1967 |
| Conditions of employment in Wexford a century ago | de Vál, Seamus S. | Article in Journal | | 1978 |
| Cupla sliocht as Donnchadh Ó Laoghaire [a couple of pieces from Donnchadh Ó Laoghaire] | de Vál, Seamus S. | Article in Journal | | 2005 |
| Dominicans in Clonmines | De Vál, Seamus S. | Article in Journal | | 1972 |
| Dónall Spáinneach Caomhánach | de Vál, Seamus S. | Article in Journal | | 1968 |
| Éirí amach 1916 : Loch Garman | De Vál, Seamus S. | Article in Journal | | 2001 |
| Éirí amach 1916 í Loch Gorman | de Vál, Seamus S. | Article in Journal | | 2000 |
| Father Tom - the Land League priest | De Vál, Seamus S. | Article in Journal | | 1978 |
| George Taylor's experiences in the insurrection of 1798 | de Vál, Seamus S. | Article in Journal | | 1998 |
| History of the Bunclody-Kilmyshall Pioneer Centre 1908-1998 : and of the F.C.J. Secondary School Centre, Bunclody 1930-1970 | De Vál, Seamus S. | Monograph or Collective Volume | Bunclody-Kilmyshall P.T.A. | 1999 |
| Letters across the Atlantic, 1 : the Nowlan letters | | Article in Journal | | 2000 |
| Logainmneacha Loch Garman | de Vál, Seamus S. | Article in Book | | 1987 |
| Na scoileanna scairte | de Vál, Seamus S. | Article in Journal | | 2000 |
| Nóta faoi scríobhaithe agus scoláirí Gaeilge ag saothru i Loch Garman etc. | de Vál, Séamus S. | Article in Journal | | 2010 |
| Oidhreacht Ghaelach Loch Garman | De Vál, Seamus S. | Article in Journal | | 1992 |
| Oulart in '98 | De Vál, Seamus S. | Monograph or Collective Volume | The author | 1986 |
| Pádraig Ó Cinnéide | de Vál, Séamus S. | Article in Journal | | 2003 |
| Patrick Prendergast Sutton | de Vál, Seamus S. | Article in Journal | | 1988 |
| Priests of 'ninety-eight' | de Vál, Seamus S. | Article in Journal | | 1997 |
| Prima Donna Mhaigh Eo | de Vál, Séamus S. | Article in Journal | | 2004 |
| Religious orders and congregations in the diocese of Ferns | De Vál, Seamus S. | Article in Book | | 1999 |
| Reverend James Parle (1811-1870) | De Vál, Seamus S. | Article in Journal | | 1995 |
| Robert Phaire and Elizabeth Grogan : an eighteenth century bigamy case | de Vál, Seamus S. | Article in Journal | | 1970 |
| Scéal Phortráid Pharnell [= The story of a portrait of Parnell] | De Vál, Seamus S. | Article in Journal | | 2006 |
| Some eighteenth century petitions | De Vál, Seamus S. | Article in Journal | | 1972 |
| Some townland names in the Parish of Bannow | de Vál, Séamus S.) | Article in Journal | | 2010 |
| Some versions of "The Streams of Bunclody" | de Vál, Seamus S. | Article in Journal | | 2008 |
| Sráidainmneacha Bhaile Loch Gorman | de Vál, Seamus S. | Article in Book | | 1998 |
| The '98 monument at Buaile Mhaodhóg | De Vál, Seamus S. | Article in Journal | | 1973 |
| The 'battle of the pound' | De Vál, Seamus S. | Article in Journal | | 1972 |
| The high crosses of Ireland | de Vál, Seamus S. | Article in Journal | | 1970 |
| The visit of Reverend Thomas Goff to Bunclody, 1806 | de Vál, Séamus S. | Article in Journal | | 2010 |
| Treasures of the landscape : County Wexford's rural heritage | Culleton, BrendanCulleton, EdwardDe Vál, Seamus S. | Monograph or Collective Volume | Wexford Organisation for Rural Development | 1994 |
| Two Wexford historians | De Vál, Seamus S. | Article in Journal | | 1973 |
| Uí Bhraoin na Dufaine | de Vál, Seamus S. | Article in Journal | | 2004 |