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Old Maps of Mentor, Minnesota for Metal Detecting

Plan your next treasure hunt with 11 historic maps of Mentor. 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 Mentor.

Mentor, MN maps

(11)
  1. 1919 Map of Valley, 1943 Print
    1919 Map of Valley, 1943 Print
    1919 Valley
    1943 Print · USGS
    Polk County at the end of the Great War shows a landscape defined by glacial lakes and a growing rail network. Genealogists can trace rural family sites near Mentor and Erskine, or locate numerous schools and churches along the Sand Hill River.
  4. 1952 Map of Grand Forks, 1967 Print
    1952 Map of Grand Forks, 1967 Print
    1952 Grand Forks
    1967 Print · USGS
    The Red River Valley in the early fifties is shown here at the height of its rail-and-river agricultural economy. Researchers can locate small-town landmarks like the Pleasant View School, the Immanuel Lutheran Church, and trace the path of the Soo Line Railroad.
    3 unique versions available
  7. 1956 Map of Grand Forks
    1956 Map of Grand Forks
    1956 Grand Forks
    1956 Print · USGS
    The Red River Valley in the mid-fifties is captured here as a thriving corridor of grain elevators and rail-linked towns along the North Dakota and Minnesota border. Researchers can trace historic church sites like Immanuel Lutheran Church, vanished rail stops at Tilde Junction, and the boundaries of the White Earth Indian Reservation.
  10. 1966 Map of Grand Forks
    1966 Map of Grand Forks
    1966 Grand Forks
    1966 Print · USGS
    The Red River Valley in the mid-sixties shows a landscape shaped by rail-line commerce and complex water management. Genealogists and historians can trace rail-side towns like Emerado and Hunter or locate rural landmarks like the Pleasant View Church.
  13. 1966 Map of Mentor, 1967 Print
    1966 Map of Mentor, 1967 Print
    1966 Mentor
    1967 Print · USGS
    In the mid-1960s, this area of Polk County was defined by its glacial lakes and the Great Northern railroad. Genealogists can locate numerous local burial sites like St Lawrence Cem and Faith Cem near the village of Mentor.
  16. 1984 Map of Crookston, 1985 Print
    1984 Map of Crookston, 1985 Print
    1984 Crookston
    1985 Print · USGS
    Northwest Minnesota at the peak of the mid-eighties reveals a landscape of fertile valley plains and conservation lands tied together by rail. Genealogists and historians can trace the local rail networks of the Soo Line Railroad and Burlington Northern Railroad through regional hubs like Crookston and Red Lake Falls.
    2 unique versions available
  19. 2010 Map of Mentor, 2010 Print
    2010 Map of Mentor, 2010 Print
    2010 Mentor
    2010 Print · USGS
    Covers Mentor, including Maple Bay, Polk County, and other nearby areas
  22. 2013 Map of Mentor, 2013 Print
    2013 Map of Mentor, 2013 Print
    2013 Mentor
    2013 Print · USGS
    Covers Mentor, including Maple Bay, Polk County, and other nearby areas
  25. 2016 Map of Mentor, 2016 Print
    2016 Map of Mentor, 2016 Print
    2016 Mentor
    2016 Print · USGS
    Covers Mentor, including Maple Bay, Polk County, and other nearby areas
  28. 2019 Map of Mentor, 2019 Print
    2019 Map of Mentor, 2019 Print
    2019 Mentor
    2019 Print · USGS
    Covers Mentor, including Maple Bay, Polk County, and other nearby areas
  31. 2022 Map of Mentor, 2022 Print
    2022 Map of Mentor, 2022 Print
    2022 Mentor
    2022 Print · USGS
    Polk County at the start of the 2020s remains a landscape of glacial lakes and pioneer-era cemeteries. Genealogists and researchers can trace local roots through the many rural burial grounds, including Hitterdal Cem, Lakeside Cem, and the churchyards of Maple Bay.
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