[Handbill containing a letter from Rev. Patrick O'Byrne, C. C. nominating candidates [ Thomas O'Reilly and Peter Reilly], Inns Quay Ward, municipal election, 15th January, 1908].

Copy of impressions of Pierce McCan by Countess Patrick O'Byrne, 1938

The life and pontificate of Pope Leo XIII /

A valedictory epistle to the conference.

Patrick Justin O'Byrne v. the Marquis of Hartington and several others. :

Report of trial held in the Court of Exchequer, Four Courts, Dublin, before the Right Honorable the Lord Chief Baron, and a special jury of the city of Dublin, on the 12th, 13th, 14th, 15th, 16th, 17th, 19th, 20th, 21st, 22nd, and 23rd days of February, and 17th, 18th, 19th, 20th, 21st, 22nd, 24th, 25th, 26th, 27th, and 28th days of June, and 1st, 2nd, 3rd, 5th, 6th, 8th, 9th, 10th, and 11th days of July, 1872. /

Correspondence between Art O'Brien, Count Patrick O'Byrne, a priest in the Irish College at Rome under the pseudonym R.P. Boyle, and Doctor Conn Murphy, mainly relating to the Dáil's office in Rome and the reaction in Italy to events in Ireland, 1922 Dec. 3 - 1923 Feb. 26.

Correspondence between Art O'Brien and George and Mairéad Gavan Duffy arranging candidates to work as a typist with George Gavan Duffy in Rome, and the Vatican's poor treatment of George Gavan Duffy. Also includes a telegram from Count Patrick O'Byrne, 1921 Sept. 2 - Dec. 7.

Statements and receipts relating to expenses incurred by the INAAVD, 1916-1918.

Letters from Art O'Brien to Irish diplomatic representatives in Europe, Osmond Esmonde, Count Gerald O'Kelly, Count Patrick O'Byrne and Michael MacWhite, mainly relating to the distribution of the 'Irish Bulletin', 1922 July 8 - Feb. 1.