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Old Maps of Little Penny, California for Metal Detecting

Plan your next treasure hunt with 11 historic maps of Little Penny. 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 Little Penny.

Little Penny, CA maps

(11)
  1. 1943 Map of Ornbaun, 1961 Print
    1943 Map of Ornbaun, 1961 Print
    1943 Ornbaun
    1961 Print · USGS
    Northern California ranching and early resort history are documented here in the early 1940s along the Mendocino-Sonoma border. Genealogists can trace family holdings like Zeni Ranch and Rickard Ranch or locate the site of the Old Ornbaun Hot Springs.
  4. 1944 Map of Ornbaun
    1944 Map of Ornbaun
    1944 Ornbaun
    1944 Print · USGS
    Coastal range ranching and timber lands are documented here in the mid-1940s at the Mendocino and Sonoma border. Researchers can trace historic family holdings like the Ornbaun Ranch, the Old Red Rock Place, and the remote Helvetian Gun Club.
  7. 1947 Map of Santa Rosa
    1947 Map of Santa Rosa
    1947 Santa Rosa
    1947 Print · USGS
    Northern California in the late 1940s was a landscape of agricultural valleys and vital rail hubs. Trace the historic routes of the Northwestern Pacific through Healdsburg or explore the mid-century waterfronts of Vallejo and Benicia near Mare Island.
  10. 1949 Map of Santa Rosa
    1949 Map of Santa Rosa
    1949 Santa Rosa
    1949 Print · USGS
    The North Bay and Wine Country appear here in the late 1940s, when the Northwestern Pacific RR still dominated regional transit. Genealogists and historians can trace old coastal outposts like Anchor Bay Settlement and the early layout of Santa Rosa.
    2 unique versions available
  13. 1958 Map of Santa Rosa, 1968 Print
    1958 Map of Santa Rosa, 1968 Print
    1958 Santa Rosa
    1968 Print · USGS
    The North Bay and Wine Country are captured in the mid-twentieth century as the region balanced its agricultural roots with a growing military and recreational footprint. Researchers can trace the Northwestern Pacific RR through the Russian River valley or locate landmarks like the Petaluma Adobe Historical Monument and The Geysers Resort.
    3 unique versions available
  16. 1960 Map of Ornbaun Valley, 1962 Print
    1960 Map of Ornbaun Valley, 1962 Print
    1960 Ornbaun Valley
    1962 Print · USGS
    The rugged interior of Mendocino County during the early 1960s is defined by vast ranch holdings and steep river canyons. Genealogists and historians can trace family locations at Mailliard Ranch, find the Ornbaun Sprs Cem, and locate the Gualala Mtn Lookout.
    2 unique versions available
  19. 1962 Map of Santa Rosa
    1962 Map of Santa Rosa
    1962 Santa Rosa
    1962 Print · USGS
    The North Bay and Wine Country were entering a period of significant growth in the early sixties, anchored by established rail corridors and coastal maritime commerce. Genealogists and historians can trace the development of Santa Rosa, locate the Mare Island Naval Shipyard, and follow the Northwestern Pacific RR through the Cotati Valley.
  22. 1964 Map of Santa Rosa
    1964 Map of Santa Rosa
    1964 Santa Rosa
    1964 Print · USGS
    The North Bay and Wine Country appear in the mid-fifties during a period of significant military and educational growth. Trace old rail lines like the Northwestern Pacific RR and explore historic sites from Petaluma to the Benicia Arsenal.
  25. 1981 Map of Point Arena
    1981 Map of Point Arena
    1981 Point Arena
    1981 Print · USGS
    The Mendocino and Sonoma coastlines meet here in the early eighties, where the rift zone carves a path through the redwood country. Genealogists and researchers can trace the development of Point Arena and Guerneville or locate the newly formed Lake Sonoma behind the Warm Springs Dam.
    2 unique versions available
  28. 1991 Map of Zeni Ridge
    1991 Map of Zeni Ridge
    1991 Zeni Ridge
    1991 Print · USGS
    Coastal Mendocino County in the early nineties remains a landscape of high ridges and remote clearings. Researchers can locate the Habersan Gun Club or trace early mountain routes through German Gap and Saddle Opening.
  31. 2021 Map of Zeni Ridge, 2021 Print
    2021 Map of Zeni Ridge, 2021 Print
    2021 Zeni Ridge
    2021 Print · USGS
    Mendocino County's high country is documented here in the 2020s, showing a landscape shaped by the Garcia River and the timber-rich ridges of the coast range. Researchers can locate named clearings like Mule Opening and local landmarks like Buck Peak or Zeni Ridge.
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