- Forum Auctions (auction)
- Natural History Museum, London: NHM WP1/8/264
- British Library, The: BL Add. 46436 f. 346
- Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 2. London & New York: Cassell & Co. [p. 62]
ARW states that CR's remarks about the snails are very interesting; mentions the "old boys" bones, c. 9-10 years old, ask the Pitt-Rivers Museum to put the cranium together for the Dorchester Museum. Also mentions a great discovery of Miocene or Pliocene man in India and flints found in situ. "Hurrah for the Missing Link!".