Douglass Ranch Airport serves as a lone aviation landmark in this portion of Duval County, marking the landscape's transition from open range to specialized ranching infrastructure. The geography is defined by the ephemeral flow of Animas Cr South and the bifurcated drainage of Parrilla Creek North and Parrilla Creek South, which carve subtle paths through the South Texas brush country. This survey illustrates the modern ranching era, where private access routes like Privranch Rd and Los Lomas Ranch Rd provide the primary connectivity across large property holdings. The density of contour lines suggests the undulating terrain typical of the region, where water management and private land use dictate the layout of roads and settlements.
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This is the sole edition of this map. No revisions or reprints were ever made.
1956 · Freer
USGS Topo · 1:62,500
1956 · Las Mujeres
USGS Topo · 1:62,500
1956 · Laredo
USGS Topo · 1:250,000
1967 · Parrilla Creek SE
USGS Topo · 1:24,000
1968 · Parrilla Creek SW
USGS Topo · 1:24,000
1968 · Mills Bennett
USGS Topo · 1:24,000
1968 · Parrilla Creek NW
USGS Topo · 1:24,000
1968 · Parrilla Creek NE
USGS Topo · 1:24,000
1968 · San Pablo
USGS Topo · 1:24,000
1971 · Freer South
USGS Topo · 1:24,000