This historical map portrays the area of In-Ko-Pah Gorge OE S in 2018, primarily covering In-Ko-Pah Gorge OE S. Featuring a scale of 1:24,000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the In-Ko-Pah Gorge OE S region at the time. Published in 2018, it is the sole known edition of this map.
This is the sole edition of this map. No revisions or reprints were ever made.
1915 · El Centro
USGS Topo · 1:125,000
1931 · Carrizo
USGS Topo · 1:125,000
1939 · Jacumba
USGS Topo · 1:62,500
1940 · Coyote Wells
USGS Topo · 1:62,500
1942 · El Centro
USGS Topo · 1:250,000
1942 · Jacumba
USGS Topo · 1:62,500
1943 · Coyote Wells
USGS Topo · 1:62,500
1950 · San Diego
USGS Topo · 1:250,000
1954 · El Centro
USGS Topo · 1:250,000
1954 · San Diego
USGS Topo · 1:250,000