Costello, M. J., Irish Free State. Army, & Royal Ulster Constabulary. (1924). Copy of intelligence bi-monthly summary for period to 30th September 1924 issued by the Royal Ulster Constabulary, with covering letter from Colonel Michael Joseph Costello, Director of Intelligence, Irish Free State Army, to the Chief of Staff.

Costello, Michael Joseph, et al. Copy of Intelligence Bi-monthly Summary for Period to 30th September 1924 Issued by the Royal Ulster Constabulary, with Covering Letter from Colonel Michael Joseph Costello, Director of Intelligence, Irish Free State Army, to the Chief of Staff. 1924.