Correspondence of James O'Mara mainly relating to the bond drive in U.S.A. Correspondents include Harry Boland, Rev. James Brennan, Éamon de Valera, Frank P. Walsh, 1919.

Míreanna comhchosúla

• Correspondence of James O'Mara and related items mainly relating to the bond drive and the American Association for the Recognition of the Irish Republic, also relating to bacon industry. Correspondents include Joseph Begley, Eamon de Valera, Harry Boland, J. L. Fawsitt, 1920.
• Correspondence of James O'Mara and other items relating to repayment of republican loans, bacon industry and other matters. Correspondents include William Cosgrave, Rev. James Brennan, 1923-1947.
• Correspondence of James O'Mara mainly relating to Sinn Féin and related items. Correspondents include Fr. James Brennan, Eamon de Valera, Diarmuid Lynch, Dr. Michael Fogarty, 1915-1918.
• Correspondence between James O'Mara, when in London, and his parents, Stephen O'Mara M. P. and Ellen Pigott 1892-1898, mainly concerning the bacon industry and family matters, 1892-1898, with wedding breakfast menu
• Correspondence of James O'Mara and other material relating to the bond drive and the Benjamin Franklin Bureau and the American Commission on Irish Independence in the U.S.A. Correspondents:- Harry Boland, Michael Collins, Éamon de Valera, Rossa Downing, Larry Ginnell, Gilbert Mac a'Bháird, Joseph McGarrity, Frank Walsh, 1921.