
San Sebastián serves as the focal point of this western Puerto Rican landscape, where the terrain transitions from the alluvial plains of major river systems into the sharp relief of the interior cordillera. The Río Grande de Añasco meanders through the southern sector, carving a deep valley past settlements like Mata y Orsini and Finca San Miguel. In the north, the Río Culebrinas and its numerous tributaries, including Quebrada de Loro and Quebrada Lasalle, drain the limestone-rich hills near Hato Arriba.
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This is the sole edition of this map. No revisions or reprints were ever made.
1937 · Aguadilla
USGS Topo · 1:20,000
1937 · Moca
USGS Topo · 1:20,000
1938 · Alto Sano
USGS Topo · 1:20,000
1938 · San Sebastian
USGS Topo · 1:20,000
1938 · Quebradillas
USGS Topo · 1:20,000
1939 · Mayaguez
USGS Topo · 1:30,000
1941 · Moca
USGS Topo · 1:30,000
1941 · Rincon
USGS Topo · 1:30,000
1941 · Rincon
USGS Topo · 1:30,000
1941 · San Sebastian
USGS Topo · 1:30,000