McEnnis, J. T., Ottman, J. T., Heaton, H. R., & Foerster, C. (1889). The Clan-Na-Gael and the murder of Dr. Cronin: Being a complete and authentic narrative of the rise and development of the Irish revolutionary movement, and an impartial account of the crime in the Carlson cottage : from original information : from matter furnished privately by members of the Clan-Na-Gael, and from unpublished material in the hands of the leading detectives and attorneys in the case. W. A. Edwards.

McEnnis, John T., et al. The Clan-Na-Gael and the Murder of Dr. Cronin: Being a Complete and Authentic Narrative of the Rise and Development of the Irish Revolutionary Movement, and an Impartial Account of the Crime in the Carlson Cottage : From Original Information : From Matter Furnished Privately by Members of the Clan-Na-Gael, and from Unpublished Material in the Hands of the Leading Detectives and Attorneys in the Case. W. A. Edwards, 1889.