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Old Maps of Union, Lima for Metal Detecting

Plan your next treasure hunt with 9 historic maps of Union. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Union.

Union, Lima maps

(9)
  1. 1900 Map of Lancaster
    1900 Map of Lancaster
    1900 Lancaster
    1900 Print · USGS
    Covers Union, including Dubuque, Platteville, and other nearby areas
  4. 1904 Map of Lancaster, 1953 Print
    1904 Map of Lancaster, 1953 Print
    1904 Lancaster
    1953 Print · USGS
    Covers Union, including Dubuque, Platteville, and other nearby areas
  7. 1908 Map of Lancaster
    1908 Map of Lancaster
    1908 Lancaster
    1908 Print · USGS
    Covers Union, including Dubuque, Platteville, and other nearby areas
    5 unique versions available
  10. 1959 Map of Dubuque, 1982 Print
    1959 Map of Dubuque, 1982 Print
    1959 Dubuque
    1982 Print · USGS
    Covers Union, including Cedar Rapids, Dubuque, and other nearby areas
  13. 1961 Map of Dubuque
    1961 Map of Dubuque
    1961 Dubuque
    1961 Print · USGS
    Covers Union, including Cedar Rapids, Dubuque, and other nearby areas
  16. 1962 Map of Dubuque
    1962 Map of Dubuque
    1962 Dubuque
    1962 Print · USGS
    Covers Union, including Cedar Rapids, Dubuque, and other nearby areas
    2 unique versions available
  19. 1962 Map of Ellenboro, 1964 Print
    1962 Map of Ellenboro, 1964 Print
    1962 Ellenboro
    1964 Print · USGS
    Covers Union, including Ellenboro, Clifton, and other nearby areas
    2 unique versions available
  22. 1976 Map of Dubuque
    1976 Map of Dubuque
    1976 Dubuque
    1976 Print · USGS
    Covers Union, including Cedar Rapids, Dubuque, and other nearby areas
  25. 1984 Map of Dubuque North, 1985 Print
    1984 Map of Dubuque North, 1985 Print
    1984 Dubuque North
    1985 Print · USGS
    Covers Union, including Dubuque, Platteville, and other nearby areas
    2 unique versions available
End of results
Showing maps 1-9 of 9

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Frequently asked questions

  • What are the different types of historical maps available for Union?
  • What is the oldest map of Union?
  • Where can I purchase historical maps of Union for my home or office?
  • Where can I download high-res historical maps of Union?
  • Are there historical topographic maps available for Union?
  • Is there historical aerial imagery available for Union?
  • Where are historical maps of Union sourced from?