IMC is in the process of digitising all its out-of-print titles. These will be made available to download through the Digital Editions section of the Digital Resources on the IMC website.
To date over 60 titles have been made available and the most recent additions to the service include the following:
The letterbook of Richard Hare, ed. James O’Shea (2013)
The Drennan–McTier Letters Vol. 1, ed. Jean Agnew (1998)
Guide to the Genealogical Office Dublin (1998)
Letters and Papers relating to the Irish Rebellion between 1642–4, ed. James Hogan (1936)
Leabhar Cloinne Aodha Buidhe, ed. Thadhg Ó Donnchadha (1931)
The full collection of Digital Editions is available here.