1950 Map of Isabela SO

This historical map portrays the area of Isabela SO in 1950, primarily covering Isabela Municipio as well as portions of Aguadilla Municipio. Featuring a scale of 1:10000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Isabela SO region at the time. Published in 1950, it is the sole known edition of this map.