Letter from Pierce O'Mahony, 10 South Frederick Street, Dublin, to John Redmond, on his willingness to be more closely identified with the Irish Parliamentary Party, "though practically out of politics", 1900 Dec. 18.

Letter from Pierce O'Mahony, St. Patrick's Orphanage, Sofia, Bulgaria, to John Redmond, reflecting on the strong friendship they shared "when we were a small band, strongly united", and regretting the current state of their relationship, 1911 Jul. 22.

Letter from Pierce O'Mahony to Francis Sheehy Skeffington regarding his attendance at a meeting, 1910 Feb. 7.

Letter from Pierce O'Mahony, Grangecon, Co. Wicklow, to John Redmond, reminding Redmond that William O'Brien represents one of the most important nationalist constituencies in Ireland, 1907 May 10.

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, enclosing a letter from Christopher Friery regarding the costs of the North Meath election petition, 1897 Aug. 1.

Letter from Pierce O'Mahony, House of Commons, London, to John Redmond, regarding legal action involving the Waterford Corporation and Waterford Harbour Board, 1900 Jun. 18.

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, on Redmond's intention to introduce a deputation against the amalgamation of the Southern Railways, 1899 Feb. 17.

Letter from Pierce O'Mahony, [Warren House, Baldoyle], Dublin, to John Redmond, on his resignation and differences of opinion on the Board of the 'Independent', 1894 Jul. 13.

Letter from Pierce O'Mahony, Irish Daily Independent, College Green, Dublin, to John Redmond, predicting that the paper will have a deficit of £3000 by the end of June, 1894 Apr. 18.

Letter from Pierce O'Mahony, 34 Fitzwilliam Place, Dublin, to John Redmond, advising Redmond that John Howard Parnell has told him that the Volunteer banners used at his brother's funeral have not been returned, 1900 Aug. 20.

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, stating that he remained in political life longer than intended for the sake of the 'Independent', 1895 Apr. 17.

Letter from Pierce O'Mahony, Irish Daily Independent, College Green, Dublin, to John Redmond, enclosing a letter from Alfred(?) Webb, requesting that he ask Redmond to attend the meeting of the Board of the 'Independent' on Thurdsay regarding finances, [1894] May 7.

Copy of letter to James Connolly from Pierce Charles de Lacy O'Mahony regretting that he cannot help Connolly with an edition of 'Labour in Irish history' but offering £3 if needed, 1914 February 8.

Bulgaria and the powers. :

being a series of [five] letters on the Balkans written from Sofia. Together with the Serbo-Bulgarian treaty, the secret annex, and the map attached thereto /

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, explaining that he does not understand Redmond's lack of interest in attending a meeting, considering the fight in the recent election, 1895 Sept. 4.

Letter from Pierce O'Mahony, Irish Daily Independent, St. Andrew's Street, Dublin, to John Redmond, referring to John Dillon's proposition that he and Redmond, with a number of friends, should consult together, 1898 Oct. 11.

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, asserting that he is not in favour of any kind of amalgamation of Irish nationalists but does approve of cooperation, 1897 Nov. 25.

Letter from Pierce O'Mahony, 10 South Frederick Street, Dublin, to John Redmond, enclosing a newscutting from the English barristers on the matter of the Great Southern and Western Railway Bill, 1901 Dec. 18.

Letter from Pierce O'Mahony, Warren House, Baldoyle, Dublin, to John Redmond, regarding a payment demanded by Christopher Friery, 1898 Jun. 19.

Letter from Pierce O'Mahony, Irish Daily Independent, College Green, Dublin, to John Redmond, reporting on the affiars in the 'Irish Daily Indepenent' company, 1892 Nov. 22.