Connolly, J., & Matheson, J. C. (1907). Copy of a letter from James Connolly to John Carstairs Matheson about the third Convention of the Industrial Workers of the World, relations between Daniel De Leon, [Eugene Victor] Debs and [William Ernst] Trautmann, plans for a new Irish Socialist Federation publication, and Connolly's recent role as New York organiser for Industrial Workers of the World.

Connolly, James, and John Carstairs Matheson. Copy of a Letter from James Connolly to John Carstairs Matheson About the Third Convention of the Industrial Workers of the World, Relations Between Daniel De Leon, [Eugene Victor] Debs and [William Ernst] Trautmann, Plans for a New Irish Socialist Federation Publication, and Connolly's Recent Role as New York Organiser for Industrial Workers of the World. 1907.