↑Notes Taken During a Journey though Part of Northern Arabia in 1848 (Royal Geographical Society, 1851). Textus interretialis (JSTOR).
↑Narrative of a Journey from Cairo to Medina and Mecca by Suez, Arabia, Tawila, Al-Jauf, Jubbe, Hail and Nejd, in 1845 (Royal Geographical Society, 1854).
↑William R. Mead, "G. A. Wallin and the Royal Geographical Society," Studia Orientalia 23 (1958).
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