Old Maps of Harmon Township, Illinois

Explore 31 old maps of Harmon Township, spanning from 1930 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.

What you can do with these maps:

  • See how Harmon Township changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
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  • Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
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Start exploring old maps of Harmon Township to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.


Harmon Township, IL maps

(31)
  1. 1930 Map of Woodsung
    1930 Map of Woodsung
    1930 Woodsung
    1930 Print · USGS
    Northern Illinois at the dawn of the 1930s shows a landscape of tight-knit farming townships linked by the Lincoln Highway. Genealogists and local historians can trace schoolhouse locations like Stone Sch and Gap Grove Sch, or locate family sites near the Prairieville Cem.

  2. 1946 Map of Sterling, 1969 Print
    1946 Map of Sterling, 1969 Print
    1946 Sterling
    1969 Print · USGS
    The Rock River corridor in the mid-1940s is captured here, showing the industrial heart of the region alongside its deep agricultural roots. Researchers can find dozens of country schools and cemeteries, including Buffalo Grove Sch, Zion Cem, and Oak Knoll Mem Park Cem.

  3. 1948 Map of Sterling
    1948 Map of Sterling
    1948 Sterling
    1948 Print · USGS
    Mid-century Sterling and Rock Falls are captured here during a time of robust rail and river activity. Genealogists can trace family roots through dozens of rural landmarks, including the Prairieville settlement, West Science Ridge Ch, and Hitt Cem.
    2 unique versions available

  4. 1949 Map of Walnut
    1949 Map of Walnut
    1949 Walnut
    1949 Print · USGS
    The rural landscapes of Bureau and Lee counties are captured in the late 1940s, a time when one-room schools and small rail towns anchored the prairie. Genealogists can trace family landmarks like Bowen Cem, Sturtz Sch, and the community of New Bedford along the Green River.
    3 unique versions available

  5. 1958 Map of Aurora, 1969 Print
    1958 Map of Aurora, 1969 Print
    1958 Aurora
    1969 Print · USGS
    Northern Illinois in the late fifties shows a landscape of powerful river industry and expanding transport corridors. Genealogists and historians can trace the development of Aurora and Joliet or locate sites like the Elwood Ordnance Plant and Starved Rock.
    3 unique versions available

  6. 1961 Map of Aurora
    1961 Map of Aurora
    1961 Aurora
    1961 Print · USGS
    Northern Illinois at the height of the post-war era reveals a landscape of massive industrial works and thriving river towns. Genealogists and historians can trace the paths of the Lincoln Highway or locate long-standing landmarks like the Green River Ordnance Plant and Starved Rock State Park.

  7. 1982 Map of Harmon
    1982 Map of Harmon
    1982 Harmon
    1982 Print · USGS
    Harmon and Hamilton townships are shown in the early 1980s at a critical rail intersection in rural Lee County. Genealogists and local historians can trace early community life through landmarks like Holy Cross Ch, Centenary Cem, and the rail stop at Van Petten.
    3 unique versions available

  8. 1982 Map of Hahnaman
    1982 Map of Hahnaman
    1982 Hahnaman
    1982 Print · USGS
    Whiteside County in the early eighties shows an engineered landscape of prairie drainage and rail lines. Researchers can trace family-named roads like Mc Elvee Road and local sites like the Montmorency Sch and the Hennepin Canal Feeder.

  9. 1983 Map of Sterling, 1984 Print
    1983 Map of Sterling, 1984 Print
    1983 Sterling
    1984 Print · USGS
    Sterling and Rock Falls are shown here at the Rock River in the early eighties, joined by a network of bridges and railroads. Researchers can trace neighborhood growth through local landmarks like Newman Central High Sch, the Indian Mounds Historic Site, and Oak Knoll Cem.
    2 unique versions available

  10. 1983 Map of Dixon West, 1984 Print
    1983 Map of Dixon West, 1984 Print
    1983 Dixon West
    1984 Print · USGS
    Dixon and its western environs are shown in the early 1980s as the regional rail and river network continued to shape Lee County. Researchers can trace family sites at Nelson Cem and Rock Ridge Cem or follow the path of the Hennepin Canal.

  11. 1985 Map of Dixon
    1985 Map of Dixon
    1985 Dixon
    1985 Print · USGS
    North-central Illinois in the mid-eighties was a land of river cities and expansive prairies defined by rail lines and private airfields. Researchers can locate family landmarks like Oakwood Cem, the Sword Landing Strip, and Sauk Valley College while tracing the C & N W railroad.
    2 unique versions available

  12. 2012 Map of Hahnaman, 2012 Print
    2012 Map of Hahnaman, 2012 Print
    2012 Hahnaman
    2012 Print · USGS
    Whiteside County in the early twenty-first century reveals a highly organized agricultural landscape shaped by aviation and drainage systems. Genealogists and local historians can locate Golder Cem or trace the development around Hahnaman and the Whiteside County Airport-Jos H Bittorf Field.

  13. 2012 Map of Harmon, 2012 Print
    2012 Map of Harmon, 2012 Print
    2012 Harmon
    2012 Print · USGS
    Harmon and the surrounding Illinois prairie are shown here in the early twenty-first century as a landscape of grid-based farming and small villages. Genealogists can trace family roots at Holy Cross Catholic Cem and Centenary Cem near the banks of Coon Creek.

  14. 2012 Map of Sterling, 2012 Print
    2012 Map of Sterling, 2012 Print
    2012 Sterling
    2012 Print · USGS
    Sterling and Rock Falls are captured in detail here during the early twenty-first century as they straddle the Rock River. Local historians can trace neighborhood developments in Grimes Addition and locate several burial sites including Riverside Cem and Oak Knoll Cem.

  15. 2012 Map of Dixon West, 2012 Print
    2012 Map of Dixon West, 2012 Print
    2012 Dixon West
    2012 Print · USGS
    The Rock River valley south of Dixon comes alive in this 2012 survey, showing the mix of education, recreation, and rural life in Lee County. Researchers can locate the Sauk Valley Community College campus, the Midway Drive-In, and several burial sites like Nelson Cem.

  16. 2015 Map of Dixon West, 2015 Print
    2015 Map of Dixon West, 2015 Print
    2015 Dixon West
    2015 Print · USGS
    Lee County life centers on the Rock River valley in the mid-2010s, showing a blend of academic campuses and quiet riverside hamlets. Local historians can trace family ties through Sugar Grove Cem or locate the rural communities of Palmyra and Nelson.

  17. 2015 Map of Harmon, 2015 Print
    2015 Map of Harmon, 2015 Print
    2015 Harmon
    2015 Print · USGS
    The rural prairie of Lee County is mapped here in the early twenty-first century, showcasing its sophisticated drainage and road networks. Genealogists and local historians can trace the vicinity of Harmon and Van Petten, as well as the Holy Cross Catholic Cem and Centenary Cem.

  18. 2015 Map of Hahnaman, 2015 Print
    2015 Map of Hahnaman, 2015 Print
    2015 Hahnaman
    2015 Print · USGS
    Hahnaman and the surrounding agricultural lands of Whiteside County are mapped here in the early twenty-first century. Genealogists and local historians can trace family road names and drainage networks like Winnebago Ditch, Main Ditch, and Golder Cem.

  19. 2015 Map of Sterling, 2015 Print
    2015 Map of Sterling, 2015 Print
    2015 Sterling
    2015 Print · USGS
    The twin cities of Sterling and Rock Falls appear in clear detail during the mid-2010s, bisected by the Rock River. Local historians can trace established neighborhoods like Grimes Addition and locate several cemeteries including Odd Fellows Cem and Riverside Cem.

  20. 2018 Map of Harmon, 2018 Print
    2018 Map of Harmon, 2018 Print
    2018 Harmon
    2018 Print · USGS
    Harmon and the surrounding Lee County prairies are shown here in the late twenty-teens, revealing a landscape deeply defined by its drainage and grid-road history. Researchers can locate family landmarks like Holy Cross Catholic Cem and trace the paths of Winnebago Ditch and the Green River.

  21. 2018 Map of Dixon West, 2018 Print
    2018 Map of Dixon West, 2018 Print
    2018 Dixon West
    2018 Print · USGS
    The Rock River valley west of Dixon comes into focus in this recent survey of Lee County. Researchers can trace local heritage through the many rural burial sites like Sugar Grove Cem or locate landmarks like Sauk Valley Community College and Nelson.

  22. 2018 Map of Hahnaman, 2018 Print
    2018 Map of Hahnaman, 2018 Print
    2018 Hahnaman
    2018 Print · USGS
    Agricultural land and aviation facilities define this Whiteside County landscape in the late 2010s. Genealogists and local historians can trace family properties near Golder Cem or study the critical drainage network of the Winnebago Ditch and Main Ditch.

  23. 2018 Map of Sterling, 2018 Print
    2018 Map of Sterling, 2018 Print
    2018 Sterling
    2018 Print · USGS
    Sterling and Rock Falls are captured in detail during the late 2010s as they span the Rock River. Local historians can trace established neighborhoods and rural landmarks like the Science Ridge Mennonite Cem and Odd Fellows Cem.

  24. 2021 Map of Harmon, 2021 Print
    2021 Map of Harmon, 2021 Print
    2021 Harmon
    2021 Print · USGS
    Harmon and the surrounding Lee County prairie are depicted here during the early twenty-first century, showing a landscape defined by industrial-scale agriculture. Researchers can trace rural cemetery locations like Greenwood Cem and the drainage network of the Green River and Winnebago Ditch.

  25. 2021 Map of Hahnaman, 2021 Print
    2021 Map of Hahnaman, 2021 Print
    2021 Hahnaman
    2021 Print · USGS
    The Illinois prairie at the boundary of Whiteside and Lee Counties reveals a landscape defined by industrial-scale drainage and rural aviation. Researchers can trace family history at Golder Cem or locate the site of Hahnaman amidst the Winnebago Ditch and Main Ditch.

Showing maps 1-25 of 31

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