Randell G. Tarín, "SECOND FLYING COMPANY OF SAN CARLOS DE PARRAS," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/qhs01), accessed April 27, 2011. Published by the Texas State Historical Association.
Susan Prendergast Schoelwer, "SAN ANTONIO DE VALERO MISSION," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/uqs08), accessed April 27, 2011. Published by the Texas State Historical Association.