Dutton, C. B., O'Brien, A. P., De Valera, É., & Ruttledge, P. J. (1923). Copies of memorandums between C.B. Dutton and Éamon De Valera, with some letters to Art O'Brien and Patrick Ruttledge, with subjects including O'Brien's arrest and legal defernce, the closing of the London office due to lack of funds, and the status of the Irish Self-Determination League of Great Britain.

Dutton, Charles Bertram, et al. Copies of Memorandums Between C.B. Dutton and Éamon De Valera, with Some Letters to Art O'Brien and Patrick Ruttledge, with Subjects Including O'Brien's Arrest and Legal Defernce, the Closing of the London Office Due to Lack of Funds, and the Status of the Irish Self-Determination League of Great Britain. 1923.