1. Baegert, J. J. Observations in Lower California. 1952. [p. 130].
2. Borah, Woodrow. Early colonial trade and navigation between Mexico and Peru. Ibero-Americana, No. 38. 1954.
3. Dunne, Peter J. M. Black robes in Lower California. 1952. [pp. 227–228].
4. Gray, Ralph H. Status of horticulture in Peru. 1930. [Ms. in Citrus Exp. Sta. Lib., Riverside, Cal.].
5. Lassepas, Ulises Urbano. De la colonizacion de la Baja California y decreto de 10 Marzo de 1857. 1859. [p. 181].