O'Brien, A. P., Murphy, F., McGrath, S., & Dutton, C. B. (1924). Letters from Art O'Brien and Seán McGrath to the governors of Wormwood Scrubs and Brixton prisons, regarding their status as political prisoners, souvenir programmes celebrating the release of O'Brien and McGrath from prison, and copies of a report compiled by Fintan Murphy concerning O'Brien's and McGrath's evidence at trial and accompanying correspondence between O'Brien and Murphy.

O'Brien, Art Patrick, et al. Letters from Art O'Brien and Seán McGrath to the Governors of Wormwood Scrubs and Brixton Prisons, Regarding Their Status as Political Prisoners, Souvenir Programmes Celebrating the Release of O'Brien and McGrath from Prison, and Copies of a Report Compiled by Fintan Murphy Concerning O'Brien's and McGrath's Evidence at Trial and Accompanying Correspondence Between O'Brien and Murphy. 1924.