- Natural History Museum, London: NHM WP1/3/27
- Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 1. London & New York: Cassell & Co. [pp. 45-47]
- Wallace, A. R. (1908). In: My Life: a Record of Events and Opinions (2nd edition). London: Chapman & Hall. [pp. 171-174]
Journey to Alexandria; life on board ship, fellow travellers, anti-cholera precautions at Gibraltar, Cairo, the desert, Alexandria, donkey drivers.