| "Les Irlandais attendent avec une légère impatience": Paris et la demande d'adhésion de Dublin à la CEE, 1961-1973 | Gillissen, Christophe | Article in Journal | | 2011 |
| "Les Irlandais attendent avec une légère impatience": Paris et la demande d'adhésion de Dublin à la CEE, 1961-1973 | Gillissen, Christophe | Article in Journal | | 2012 |
| 'Lemass's brainchild' : the 1966 informal committee on the Constitution and change in Ireland | Girvin, Brian | Article in Journal | | 2013 |
| A semi-state in all but name? : Seán Lemass's film policy | Flynn, Roddy | Article in Book | | 2005 |
| Constructing/deconstructing the image of Sean Lemass' Ireland | Savage, Robert | Article in Book | | 2003 |
| De Valera, Lemass and Irish economic development, 1933-1948 | Raymond, Raymond James | Article in Book | | 1983 |
| Fianna Fáil & arms decommissioning 1923-32 | Horgan, John, b. 1940 | Article in Journal | | 1997 |
| I remember 1916 | Lemass, Seán F. | Article in Book | | 2012 |
| I remember 1916 | Lemass, Seán Francis, 1899-1971 | Article in Journal | | 1966 |
| Judging Lemass : the measure of the man | Garvin, Tom | Monograph or Collective Volume | Royal Irish Academy | 2009 |
| Megaphone diplomacy and all that jazz: North-South relations, 1963-65 | McCann, David | Article in Journal | | 2011 |
| Modernization's lost pasts: Sean O'Faolain, the 'Bell', and Irish modernization before Lemass | Quigley, Mark S.
| Article in Journal | | 2014 |
| Notes on conversations | Mansergh, Nicholas, 1910-1991 | Article in Book | | 1997 |
| Reconciliation, rights, and protests, 1963-8 | Whyte, J. H. | Article in Book | | 2003 |
| Sean Lemass | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1979 |
| Seán Lemass | Farrell, Brian | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Seán Lemass | Savage, Robert | Monograph or Collective Volume | Dundalgan Press [for the] Historical Association of Ireland | 1999 |
| Sean Lemass : a biography | O'Sullivan, Michael, 1957- | Monograph or Collective Volume | Blackwater | 1994 |
| Seán Lemass : a man in a hurry | Horgan, John, b. 1940 | Article in Book | | 1996 |
| Seán Lemass : the enigmatic patriot | Horgan, John, b. 1940 | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| Seán Lemass and Laurence Kettle: Agents for technical change and industrial research | Fitzgibbon, MichaelO'Doherty, Dermot | Article in Journal | | 2014 |
| Sean Lemass and the making of modern Ireland | Bew, PaulPatterson, Henry | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| Seán Lemass and the Ulster question, 1959-65 | Patterson, Henry | Article in Journal | | 1999 |
| Seán Lemass, 1959-66 | Evans, Bryce | Article in Book | | 2025 |
| Seán Lemass, Taoiseach, 1959-1966 | Horgan, John, 1940- | Thesis | | 1997 |
| Speech by the former Taoiseach, at the launch of "Judging Lemass" in the Royal Irish Academy, Dawson Street, Dublin | Cowen, Brian | Article in Journal | | 2011 |
| Strains of modernization | Shade, William G. | Article in Journal | | 1979 |
| The economic influence of Séan Lemass, 1945-1966 | Kelleher, Marion | Thesis | | 1995 |
| The Lemass legacy and the making of contemporary Ireland, 1958-2011 | Girvin, Brian | Article in Book | | 2014 |
| The political legacy of Seán Lemass | Mansergh, Martin | Article in Journal | | 2000 |
| The politics of terminology : Seán Lemass and Northern Ireland, 1959-1966 | Kelly, Stephen | Article in Book | | 2010 |
| The power game : Fianna Fáil since Lemass | Collins, Stephen | Monograph or Collective Volume | O'Brien | 2000 |
| The unlikely marraige : de Valera, Lemass and the shaping of modern Ireland | Farrell, Brian | Article in Journal | | 1985 |
| Towards a corporate state? Seán Lemass and the realignment of interest groups in the policy process 1948-1964 | Murphy, Gary | Article in Journal | | 2000 |
| Towards a corporate state? Seán Lemass and the realignment of interest groups in the policy process, 1948-1964 | Murphy, Gary | Monograph or Collective Volume | Dublin City University Business School | 1997 |
| Towards co-operation : Sean Lemass and north-south economic relations, 1956-65 | Kennedy, Michael (Michael J.) | Article in Journal | | 1997 |
| Whose Ireland? : the Lemass era | Girvin, BrianMurphy, Gary | Article in Book | | 2005 |