
Agricultural expansion and petroleum production define this portion of the Rio Grande Valley during the early 1960s. The Missouri Pacific railroad corridor serves as the primary axis for development, connecting the established centers of Alamo, Donna, and Weslaco. These towns are densely detailed with local landmarks, including the Po, Armory, and multiple educational facilities like Fulton Sch and East Donna Sch. Surrounding the urban areas, a complex irrigation network anchored by the Donna Main Canal and Donna Reservoirs supports the valley's citrus and vegetable industry.
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4 editions found
1914 · San Juan
USGS Topo · 1:48,000
1916 · San Juan
USGS Topo · 1:62,500
1949 · Mc Allen
USGS Topo · 1:250,000
1953 · Brownsville
USGS Topo · 1:250,000
1954 · McAllen
USGS Topo · 1:250,000
1956 · Mercedes
USGS Topo · 1:24,000
1956 · Progreso
USGS Topo · 1:24,000
1956 · Brownsville
USGS Topo · 1:250,000
1956 · Port Isabel
USGS Topo · 1:250,000
1957 · Edcouch
USGS Topo · 1:24,000