O'Brien, A. P., McGrath, S., & Irish Self-Determination League of Great Britain. (1922). Letters from Art O'Brien and Seán McGrath regarding the re-organisation of the Irish Self-Determination League of Great Britain as an Anti-Treaty Republican movement. Includes leaflets for public meetings and lectures with speakers including Constance Markievicz, Mary MacSwiney, and Maud Gonne.

O'Brien, Art Patrick, et al. Letters from Art O'Brien and Seán McGrath Regarding the Re-organisation of the Irish Self-Determination League of Great Britain as an Anti-Treaty Republican Movement. Includes Leaflets for Public Meetings and Lectures with Speakers Including Constance Markievicz, Mary MacSwiney, and Maud Gonne. 1922.