“Notice of the Discovery of Remains of the Elk (Cercus Alces, Linn., Alces Malchis, Gray), in Berwickshire; with Notes of its occurrence in the British Islands, more partiuclarly in Scotland, &c” (1872) Proceedings of the Society of Antiquaries of Scotland, 9, pp. 297–345. doi:10.9750/PSAS.009.297.345.