Bannerman, W. Bruce, ed. (1908). Miscellanea Genealogica et Heraldica. 4th series. Vol. II. London: Mitchell, Hughes and Clarke, 140 Wardour Street W. p. 204 – via Google Books.
doi.org
John J. Johnson (September 1944). "Early Relations of the United States with Chile". The Pacific Historical Review (JSTOR). 13 (3): 266. doi:10.2307/3635952. JSTOR3635952.
The Enigma of the New Madrid Earthquakes of 1811–1812. Johnston, A. C. & Schweig, E. S. Annual Review of Earth and Planetary Sciences, Volume 24, 1996, pp. 339–384. Available on SAO/NASA Astrophysics Data System (ADS)
John J. Johnson (September 1944). "Early Relations of the United States with Chile". The Pacific Historical Review (JSTOR). 13 (3): 266. doi:10.2307/3635952. JSTOR3635952.