1. National Union for Improving the Education of Women of All Classes, Second Annual Report 1872–73. Report of the Statistical Subcommittee (1873):20, London. St. John’s College Archives, Educational Pamphlets IX, 12.15.69.
2. Records of Newnham College (1894):30-31. Newnham College, Cambridge Archives, AD/5/4/1.
3. Bergmann HF (2001) The Silent University. The New England Quarterly74:447-477.
4. De Morgan A (1869) Elements of Arithmetic. Walton, London, 5th ed.
5. Harris J (1872) Graduated Exercises in Arithmetic and Mensuration with Key. Longmans, London.