1837. Barron, Richard. Views in India. London. (Coloured plates of Toda man and woman, and of the village of Kars.)
1838. Birch, de Burgh. Topographical Report on the Neilgherries. Madras Journ. Lit. and Sci., vol. viii, p. 86. [[732]]
1838. Schmid, Bernhard. Ueber Sprache- und Völkerverwandschaft, Halle. On S. 27 is a section on the dialect of the Todas.
1842. Stevenson, Rev. Dr. A Collection of Words from the Language of the Todas, the Chief Tribe of the Nilgiri Hills. Journ. Bombay Branch of Roy. Asiatic Soc., vol. i, p. 155.
1844. Muzzy, C. F. Account of the Neilgherry Hill Tribes. Madras Christian Instructor and Missionary Record, Madras, vol. ii, p. 358.
1844. Anon. Madras Spectator, Aug. 31, 1844, p. 559 (an account of a Toda funeral).
1844–5. Congreve, H. The Descent of the Thautawars. Madras Spectator, 1844, pp. 361, 655, 694, 768; 1845, pp. 29, 37, 63.
1847. Congreve, H. The Antiquities of the Neilgherry Hills, including an Inquiry into the Descent of the Thautawars or Todas. Madras Journ. Lit. and Sci., vol. xiv, p. 77.
1848. Ouchterlony. Geographical and Statistical Memoir of a Survey of the Neilgherry Mountains. Madras Journ. Lit. and Sci., 1848, vol. xv, p. 1.
1849. Schmid, B. Remarks on the Origin and Languages of the Aborigines of the Nilgiris, suggested by the papers of Captain Congreve and the Rev. W. Taylor on the supposed Celto-Scythic Antiquities in the South of India. Journ. Bombay Branch Roy. Asiatic Soc., vol. iii, Part I, p. 50.