This historical map portrays the area of Polo in 2018, primarily covering Polo as well as portions of Woosung, Woosung Township, and Grand Detour Township. 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 Polo 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.
1918 · Dixon
USGS Topo · 1:62,500
1922 · Oregon
USGS Topo · 1:62,500
1924 · Oregon
USGS Topo · 1:62,500
1930 · Woodsung
USGS Topo · 1:48,000
1942 · Forreston
USGS Topo · 1:62,500
1945 · Forreston
USGS Topo · 1:62,500
1946 · Sterling
USGS Topo · 1:62,500
1948 · Sterling
USGS Topo · 1:62,500
1950 · Dixon
USGS Topo · 1:62,500
1954 · Rockford
USGS Topo · 1:250,000