Vol. 5, no. 4 (pp. 140-143);
Early history of Costilla County.
Brief article discussing the history of Costilla County, Colorado, from its origin in the the Trinchera and Costilla Estates of the Sangre de Cristo Land Grant ca. 1849. The article also includes information on the earliest commercial ventures in Costilla County, and San Luis, Colorado, in particular.
Denver (Colo.): State Historical Society of Colorado, 1928.
Colorado Magazine Vol. 5, no. 4 (pp. 140-143)