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1:24,000 Quadrangles, Costilla County
Cascade Quadrangle, El Paso County, Colorado
Fort Garland SW Quadrangle, Costilla County, Colorado
La Valley Quadrangle, Costilla County, Colorado
Southern Half of the Culebra Peak Quadrangle, Costilla and Las Animas Counties, Colorado
Taylor Ranch Quadrangle, Costilla County, Colorado