Correspondence of Art Ó Briain with Rory Erskine Marr, William Gillies and E. T. John, regarding the organisation of a "Celtic Congress", purchase of furniture and other matters, 1919 May 23-Dec. 31.

Letter from William Gillies on behalf of Comunn nan Gaidheal to Art O'Brien, regarding a resolution of support with the people of Ireland passed by the society, 1918 May 13.

Letters and memos between Art Ó Briain, Liam Mac Giolla Íosa [William Gillies] and others regarding plan to evacuate and sell Irish Self-Determination League property, including a list of all books, letters and furniture located at London Office at 3 Adam Street, with seven used cheque-books, 1919 Nov. 11-[1925 June 20].

Ris a'bhruthaich

criticism and prose writings

Celtic connections :

proceedings of the 10th International Congress of Celtic Studies /

Correspondence of Art Ó Briain with Dr. Bernard O’Connor, a former leader of the Appeals Committee, relating to the visit of Archbishop Mannix to London, with unrelated note from Robert Murray, the former chairman of the Appeals Committee, to William Gillies, 1925 Nov. 17-Dec. 15.

Report on costs of the Terence MacSwiney publicity campaign, with a typescript note by Lillie O’Connell of her recollections of MacSwiney, and cuttings from various publications, including 'Old Ireland', 'The Leader', 'The Catholic Times' and 'Young Ireland' ('Éire Óg'), 1920 Sept. 4-1921 March 4.

Overture in G :

for Strings /

Typescript copy memos of Art Ó Briain to Eamon O’Tighearnaigh and C. B. Mac Didin, requesting them to find out information for both Ernest Blythe (Minister for Trade and Commerce) and "Sire", with unrelated memos about Peter Hanley (prisoner), 1919 July 21-Nov. 13.

Correspondence and typescript copy correspondence between Seán McGrath and British Labour Party representatives Arthur Henderson MP and William Gillies regarding Irish political prisoners, 1925 March 20-June 18.

Correspondence and copy correspondence of Art Ó Briain with Ruaraidh Arscaine is Mhairr, William Gillies and E.T. John (British Celtic nationalists) regarding attendance at meetings, relationship between Gaelic League and Scottish Comunn nan Gàidheal and holding of Celtic Congress, with two memos to Michael Collins, 1919 June 1-Sept. 12.