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Old Maps of Onslow, Iowa for Metal Detecting

Plan your next treasure hunt with 9 historic maps of Onslow. 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 Onslow.

Onslow, IA maps

(9)
  1. 1891 Map of Monticello
    1891 Map of Monticello
    1891 Monticello
    1891 Print · USGS
    Jones County at the peak of the rail era shows a landscape organized by iron rails and river bends. Trace the junctions and early plats of Monticello, Center Junction, and Wyoming along the Chicago and North Western Railroad.
    3 unique versions available
  4. 1900 Map of Anamosa
    1900 Map of Anamosa
    1900 Anamosa
    1900 Print · USGS
    Eastern Iowa is shown here during the peak of its rail-driven development at the end of the century. Genealogists and historians can trace the early layouts of Anamosa and Monticello or locate smaller settlements like Sand Spring and Rockville.
    4 unique versions available
  7. 1959 Map of Dubuque, 1982 Print
    1959 Map of Dubuque, 1982 Print
    1959 Dubuque
    1982 Print · USGS
    The Tri-State region comes alive in the mid-twentieth century as a hub of river commerce and rail transit. Genealogists and historians can trace the paths of the Illinois Central Gulf through Dubuque or locate the Savanna Ordnance Depot and Lock and Dam No 11.
  10. 1961 Map of Dubuque
    1961 Map of Dubuque
    1961 Dubuque
    1961 Print · USGS
    The Tri-State region's river-and-rail landscape is captured here during the early sixties, showing the convergence of Iowa, Illinois, and Wisconsin. Trace mid-century rail lines like the Chicago Great Western Ry and explore sites like the Savanna Ordnance Depot and Backbone State Park.
  13. 1962 Map of Dubuque
    1962 Map of Dubuque
    1962 Dubuque
    1962 Print · USGS
    The Tri-State region's river-and-rail economy is captured here in the early sixties, centered on the Mississippi River bluffs. Genealogists and historians can locate Numerous lead and zinc mines, the New Melleray Abbey Monastery, and rural hubs like Saint Olaf.
    2 unique versions available
  16. 1976 Map of Dubuque
    1976 Map of Dubuque
    1976 Dubuque
    1976 Print · USGS
    The tri-state borderlands of Iowa, Wisconsin, and Illinois come alive during the mid-seventies, showing a region built on river commerce and mining. Genealogists and historians can trace the paths of the Illinois Central railroad or locate heritage sites like the New Melleray Abbey Monastery and Backbone State Park.
  19. 1980 Map of Wyoming West, 1981 Print
    1980 Map of Wyoming West, 1981 Print
    1980 Wyoming West
    1981 Print · USGS
    Jones County's agricultural heartland is captured here in the 1980s, centered on the historic town of Wyoming and the southern Wapsipinicon River valley. Genealogists and local historians can trace family locations at North Madison Cem or follow the route of the Chicago Milwaukee St Paul and Pacific rail line.
  22. 1984 Map of Anamosa, 1985 Print
    1984 Map of Anamosa, 1985 Print
    1984 Anamosa
    1985 Print · USGS
    Eastern Iowa's river valleys and farming communities are captured here in the mid-eighties, showing a landscape defined by the Wapsipinicon River and Maquoketa River. Genealogists and historians can locate legacy landmarks like the Independence State Hospital, Ebys Mill, and the State Penal Farm.
    2 unique versions available
  25. 2022 Map of Wyoming West, 2022 Print
    2022 Map of Wyoming West, 2022 Print
    2022 Wyoming West
    2022 Print · USGS
    Jones County at the start of the 2020s shows a landscape of established rural towns and winding river valleys. Genealogists can trace family ties through several local sites including the North Madison Pioneer Cem, Madison Center Cem, and the community of Center Junction.
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