Grenville serves as the primary settlement on this Union County landscape, situated along the northern section of the survey. The community's local infrastructure is detailed through specific street labels like Burlington St, 1st St, and 5th St, as well as a central Po marker. The surrounding terrain is defined by dramatic volcanic and mesa formations, notably Mt Clayton and the crescent-shaped Horseshoe Mtn in the southwest corner. The drainage pattern is dominated by the winding paths of Seneca Cr and Alamos Cr, which cut through the high plains. Extensive ranching or maintenance routes such as Sand Mesa Rd, Blind Gap Rd, and Wiseman Rd create a grid-like network across the expansive elevations of Sand Mesa and the Kilburn Hills, illustrating the low-density, wide-open character of this northeastern New Mexico region.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Dalhart
USGS Topo · 1:250,000
1958 · Dalhart
USGS Topo · 1:250,000
1962 · Dalhart
USGS Topo · 1:250,000
1966 · Black Canyon
USGS Topo · 1:24,000
1972 · Mount Dora
USGS Topo · 1:24,000
1972 · Boiler Gap
USGS Topo · 1:24,000
1973 · Wetherly Lake
USGS Topo · 1:24,000
1973 · Grenville SW
USGS Topo · 1:24,000
1973 · Snyder Lake
USGS Topo · 1:24,000
1973 · Tripod Mountain
USGS Topo · 1:24,000