relating to the Irish Republican Brotherhood and the Volunteers with particular
reference to the Easter Rising and the acceptance of the Treaty by the Supreme
Council of the IRB and 3 Northern Division. Correspondence and reports relating
to McCulloughs role as Dáil Éireann Special Commissioner to
the United States (1922). Notes, statements by McCullough, historical enquiries,
correspondence with contemporaries including Bulmer Hobson, P.S. OHegarty
and Patrick McCartan, and correspondence with the Bureau of Military History concerning
aspects of the revolutionary period with particular reference to the Rising, the
Treaty and his membership and presidency of the Supreme Council of the IRB.
Notes and scripts for broadcasts by McCullough. Family and business material including
correspondence between McCullough while in prison and Agnes Ryan, his wife.