Smith (Hugh McCormick)
The Mussel Fishery and Pearl-button Industry of the Mississippi River. Bulletin U. S. Fish Commission, Vol. xviii, pp. 289–314. Washington, 1899.
Smith (Sidney)
Large Pearl in Unio margaritiferus. “The Naturalist,” p. 133. London, 1866.
Somerset (Somers)
The Pearl Fishery of Ceylon. “The Nineteenth Century,” Vol. ccclxiii, pp. 843–851. London, May, 1907.
Soto (Ferdinando de)
The Discovery and Conquest of Terra Florida by Don. Ferdinando de Soto and Six Hundred Spaniards his Followers. Written by a Gentleman of Elvas. London, Hakluyt Society, 1851. 8vo.
Soubeyran (J. Léon) and Delondre (Aug.)
De la pêcherie d’Huîtres perlières de Tinnevelly et de la culture artificielle des Huîtres perlières de la même localité. Bulletin de la Société d’Acclimatation, Vol. iv, pp. 398–415. Paris, 1867.