This historical map portrays the area of Harmon in 2021, primarily covering Harmon as well as portions of Harmon Township, Van Petten, and Marion 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 Harmon region at the time. Published in 2021, 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
1930 · Woodsung
USGS Topo · 1:48,000
1946 · Sterling
USGS Topo · 1:62,500
1948 · Sterling
USGS Topo · 1:62,500
1949 · Walnut
USGS Topo · 1:62,500
1950 · Dixon
USGS Topo · 1:62,500
1951 · Amboy
USGS Topo · 1:62,500
1958 · Aurora
USGS Topo · 1:250,000
1961 · Aurora
USGS Topo · 1:250,000
1982 · Harmon
USGS Topo · 1:24,000