
Harlingen serves as the commercial and residential hub for this portion of Cameron County, defined by a dense network of drainage and irrigation infrastructure essential to the Rio Grande Valley. The landscape is carved by the winding Arroyo Colorado and a systematic grid of canals, including Number One Canal and Number Seven Canal. These waterways dictate the layout of surrounding settlements such as Primera, Palm Valley, and Combes.
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This is the sole edition of this map. No revisions or reprints were ever made.
1929 · Rio Hondo
USGS Topo · 1:24,000
1929 · Harlingen
USGS Topo · 1:24,000
1929 · Santa Rosa
USGS Topo · 1:24,000
1929 · Santa Maria
USGS Topo · 1:24,000
1929 · La Feria
USGS Topo · 1:24,000
1929 · La Paloma
USGS Topo · 1:24,000
1930 · Barreda
USGS Topo · 1:24,000
1932 · Combes
USGS Topo · 1:31,680
1932 · Rio Hondo
USGS Topo · 1:31,680
1932 · Harlingen
USGS Topo · 1:31,680