11. Clinical Lecture on Croup and the Diseases that resemble it. By Sir William Jenner, Bart., M.D., K.C.B., F.R.S. 'Lancet,' Jan. 2nd and 16th, 1875.
2. On Certain Points relating to the Etiology, Pathology and Treatment of Diphtheria. By George Johnson, M.D., F.R.S. ' Lancet,' Jan. 2nd and 16th, 1875.
3. A Lecture on the Relation between Croup and Diphtheria. By G. Johnson, M.D. ' British Medical Journal,' Sept. 18th, 1875.
4. On Tracheotomy in Croup and Diphtheria. By George Buchanan, M.D., Professor of Surgery in the University of Glasgow. ' British Medical Journal,' Sept. 4th, 1875.
5. Report of Paper and Discussion on Diphtheria and its Relations to so-called Croup at the Royal Medical and Chirurgical Society of London. ' Lancet, Nov. 13th, 1875.
6. On Diphtheria and the Diseases allied to it, or which may be mistaken for it. By R. H. Semple, M.D. London, 1871.
7. On Croup and Diphtheria. By R. H. Semple, M.D. London, 1872.
8. History and Meaning of the Terms Diphtheria and Croup. By Sir J. R. Cormack, M.D. ' British Medical Journal,' April 24th, 1875.
9. Lectures on the Principles and Practice of Physic. By Sir Thomas Watson, Bart. Fifth edition, 1871. Article Diphtheria.
10. Flint's Practice of Medicine. 1868. Articles Diphtheria and Croup.
11. Aitken's Science and Practice of Medicine. 1872. Articles Croup and Diphtheria.
12. Russell Reynolds's System of Medicine. Articles Croup and Diphtheria. Vol. I, 1866.
13. Ziemssen's Cyclopædia of the Practice of Medicine. Oertel on Epidemic Diphtheria.
14. Virchow's Pathologie und Therapie. Bamberger on Croup and Diphtheria.
15. Hueter—Tracheotomie und Laryngotomie. Handbuch der allgemeinen und speciellen Chirurgie. Erlangen, 1872.