Speckmann, F., Die Hermannsburger Mission in Afrika. Hermannsburg, 1876.
Spectator, The. London, 1711-1712, 1714.
Speight, Harry, The Craven and North-West Yorkshire Highlands. London, 1892.
Tramps and Drives in the Craven Highlands. London, 1895.
Speijer, J. S., “Le Dieu romain Janus,” in Revue de l'Histoire des Religions, xxvi. (1892).
Spencer, Edmund, Travels in Circassia, Krim Tartary, etc. London, 1836.
Spencer, Herbert, First Principles. Third Edition. London, 1875.
Spencer, J., De legibus Hebraeorum. The Hague, 1686.
Spencer, W. Baldwin, in letter to the Author (v. 101 n.).
An Introduction to the Study of Certain Native Tribes of the Northern Territory. (Bulletin of the Northern Territory, No. 2. Melbourne, 1912).