This historical map portrays the area of Irwin SE in 2011, primarily covering Irwin SE. 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 Irwin SE region at the time. Published in 2011, it is the sole known edition of this map.
This is the sole edition of this map. No revisions or reprints were ever made.
1950 · Irwin
USGS Topo · 1:62,500
1951 · Irwin
USGS Topo · 1:62,500
1951 · Gypsy Valley
USGS Topo · 1:62,500
1951 · Merriman
USGS Topo · 1:62,500
1951 · Merriman 4
USGS Topo · 1:62,500
1957 · Valentine
USGS Topo · 1:250,000
1959 · Valentine
USGS Topo · 1:250,000
1985 · Cody
USGS Topo · 1:100,000
1990 · Merriman
USGS Topo · 1:24,000
1990 · Irwin
USGS Topo · 1:24,000