The town of Humacao serves as the central hub for this coastal region of southeastern Puerto Rico, situated where the Rio Humacao meets the coastal plains. The landscape is defined by the winding paths of numerous waterways, including the Rio Anton Ruiz and Rio Blanco, which drain the surrounding highlands toward the Caribbean Sea. Local transit is centered on the PR-3 and PR-31 corridors, connecting smaller settlements like La Fermina, Bajandas, and Pueblito del Rio.
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1945 · El Yunque
USGS Topo · 1:30,000
1946 · El Yunque
USGS Topo · 1:30,000
1946 · Humacao
USGS Topo · 1:30,000
1946 · Punta Guayanes
USGS Topo · 1:30,000
1946 · Gurabo
USGS Topo · 1:30,000
1946 · Juncos
USGS Topo · 1:30,000
1946 · Yabucoa
USGS Topo · 1:30,000
1946 · Naguabo
USGS Topo · 1:30,000
1947 · Humacao SO
USGS Topo · 1:10,000
1947 · Punta Guayanes NE
USGS Topo · 1:10,000