O'Brien, A. P., Collins, M., & London County Westminster & Parr's Bank. (1921). Bundles of receipts for payments Art Ó Briain made by cheque at time of final Treaty negotiations, with note about funding sent to "M.O.C." (Michael Collins), note from Ó Briain’s bankers, and draft of Ó Briain’s statement for publication about signing of Articles of Agreement.

O'Brien, Art Patrick, et al. Bundles of Receipts for Payments Art Ó Briain Made by Cheque at Time of Final Treaty Negotiations, with Note About Funding Sent to "M.O.C." (Michael Collins), Note from Ó Briain’s Bankers, and Draft of Ó Briain’s Statement for Publication About Signing of Articles of Agreement. 1921.