This collection consists largely of letters from Roger Casement to Captain Hans Boehm, during Casement's stay in Germany in 1915, as well as some associated material (photographs, medals) relating to his first contact with the German authorities in November and December 1914 and the formation of the Irish Brigade in 1915.

This collection, which is part of the larger Constantine Curran/Helen Laird letter collection, contains material by and relating to James Joyce. It comprises 133 letters by or relating to James Joyce, members of his family, and others closely associated with him. The collection includes 25 letters from Joyce to Curran, letters from Joyce's brother Stanislaus, and correspondence from associates and friends of Joyce such as Paul Leon, Harriet Shaw Weaver, and Sylvia Beach.

The Dublin Metropolitan Police (DMP) Prisoners Books for 1905-1908 and 1911-1918 are amongst the most valuable new documents to come to light on the revolutionary decade. They include important information on social and political life in the capital during the last years of the Union, from the period of widespread anticipation of Home Rule, to the advent of the 1913 Lockout, the outbreak of the First World War, the Easter Rising and its aftermath, including the conscription crisis of 1918. They will also be invaluable to those interested in criminology, genealogy, and family history.

A collection of the surviving letters of Honora (Nano) Nagle (1718-1784), foundress of the Sisters of the Presentation of the Blessed Virgin Mary (PBVM). Nano Nagle brought the Ursuline congregation to Ireland, before founding the Presentations. This collection represents a digital reunification of the surviving letters. A cousin of Edmund Burke, Nano was a member of a prominent Catholic landowning family in Munster. The material is collated from three separate archival collections: the Presentation Sisters Congregational Archives, Cork (PSCA); the archives of the Presentation Convent, George's Hill, Dublin; and the Presentation Archives, San Francisco, USA. Within the PSCA, there are letters originally belonging to the Archives of the Ursuline Convent, Blackrock, Cork; these letters were gifted to the Irish Presentation Sisters on the occasion of the tercentenary of the birth of Nano Nagle (2018). There is also one letter that was gifted by the Presentation Convent, New Windsor, USA, on the occasion of the tercentenary. The digital collection comprises of seventeen manuscript letters; the letters are from Nano Nagle to Eleanor Fitzsimons (later Sr. Angela Fitzsimons), an Irish religious novice in Paris, and from Nano Nagle to Teresa Mulally, educator of the poor, in Dublin.

A collection of material related to the Easter Rising 1916 from the IBVM (Loreto) Institute & Irish Province Archives, including contemporaneous accounts of the Rising as observed by the Loreto Sisters at St Stephen’s Green Dublin and Loreto Abbey Rathfarnham. The material is collated from three separate Loreto archival collections: the community archives of Loreto Abbey Rathfarnham; Loreto College, 53 St Stephen’s Green; and M. Michael Corcoran IBVM, Superior General 1888 – 1918. The collection comprises of two manuscript community annals, a military permit, picture postcards from Loreto Abbey Rathfarnham and Loreto College, 53 St Stephen’s Green, and a typed letter from M. Michael Corcoran IBVM, Superior General 1888 – 1918.

[Letter from J. O'Donnell, ('Prague', Newcastle Park, Galway) to [the Irish Folklore Commission], apologising for not being able to supply any worth-while information for the questionnaire on Tinkers.]

[Letter from Seán O'Casey (Rathconrath, Co. Westmeath) to Seán [Ó Súilleabháin], concerning the questionnaire on Tinkers, which Ned Buckley has forwarded on his behalf.]

[Letter from Patrick Lyons (Post Office Lane, Clonmel, Co. Tipperary) to Sea´n Ó Su´illeabha´in, providing further information for the questionnaire on Tinkers.]

[Letter from Patrick Lyons (Post Office Lane, Clonmel, Co. Tipperary) to the Irish Folklore Commission, providing further information for the questionnaire on Tinkers.]

[Letter from Eamonn Delaney (Thomastown, Golden, Co. Tipperary) to Seán Ó Súilleabháin, containing information for the questionnaire on Tinkers.]

[Letter from S. S. Henderson to [the Irish Folklore Commission], returning the 'enclosed' and informing the recipient of her husband's death.]

[Letter from Gwen D. Thorpe, (Altikeeragh, Castlerock, Co. Londonderry, N. Ireland) to the [Irish Folklore Commission], returning the uncompleted questionnaire on Tinkers.]

[Letter from the teacher Kate Rushe concerning the content of a manuscript, 20 January 1939]

Letter from Séamus Mac Aonghusa to Roger McHugh, M.A., U.C.D.

Letter from Mary B. Dunphy, 69-70 Irishtown, New Ross, Co. Wexford, to Sean O'Sullivan, 12 November 1945.

Letter from Máirtín Breathnach, Inistioge, Co. Kilkenny, to Sean O'Sullivan, 17 September 1945.

Letter and note from Seán Ó h-Eochaidh, Cruachlann, Teilionn, Co. Donegal, to Seán Ó Súilleabháin, 14 May 1945.

Letter from Tomás Ó Broin, 3 Ely Place, Galway, to Seán Ó Súilleabháin, 26 August 1945.

Letter to Seán Ó Súilleabháin from Pádraig Ó Fionnghusa, Cluain Meala, Co. Tpperary.

Letter to Seán Ó Súilleabháin from Seán Mac Mathghamhna, Luach, Dúlalinn, Co. Clare.

Cover letter from Seán Ó Duinnshléibhe to the Secretary of the Irish Folklore Commission, 28 September 1945. Encloses collected responses to a questionnaire compiled by the Irish Folklore Commission on the Irish Famine (1845-1852)

Cover letter from [Tadhg Ó Murchadha], "An Coirreán", to Seán [Ó Súilleabháin of the Irish Folklore Commission], 27 September 1945. Stamped: Coimisiún Béaloideas Éireann. 29 September 1945.

[Letter from Dáithí Ó Ceanntúil (David Cantwell), (Croom, Co. Limerick) to Seán Ó Súilleabháin, enclosing a newscutting of an article entitled 'To quit caravan'.]

Letter from Seán Ó h-Eochaidh, Cruachlann, Teilionn, Co. Donegal, to Seán Ó Súilleabháin, 20 September 1945.