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Chipman, Donald E (June 15, 2010). "Pedro de Rábago y Terán". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Blake, Robert Bruce (June 15, 2010). "Hugo Oconór". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Hewitt, Harry P (June 15, 2010). "Edvard Emil (Emilio) Langberg". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Thompson, Richard A (June 12, 2010). "Camp Pena Colorado". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Ochoa, Ruben E (June 15, 2010). "August Santleben". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Kohout, Martin Donell (June 15, 2010). "Alfred Stevens Gage". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Kohout, Martin Donell (June 9, 2010). "A. S. Gage Ranches". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Kohout, Martin Donell (June 15, 2010). "Joseph Daniel Jackson". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.
Kohout, Martin Donell (June 15, 2010). "Glenn Spring Raid". Handbook of Texas Online. Texas State Historical Association. Retrieved December 13, 2010.