1900s (20th Century) Maps of Island Mountain, California
Explore 10 historic maps of Island Mountain from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.
Whether you're researching your family's past, planning a metal detecting trip, or studying how Island Mountain's landscape evolved across the 1900s, these high-resolution maps are a powerful tool for exploring the history of this region.
- Focus on a specific era: All maps on this page are from the 1900s, giving you a focused view of this time period.
- See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
- Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
- View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.
Start exploring Island Mountain's history through authentic maps from the 1900s. This is your window into the past.
Island Mountain, CA maps
(10)- 1921 Map of Hoaglin, 1922 Print
1921 Hoaglin1922 Print · USGSTrinity County in the early twenties shows a wilderness being mapped for forest management and rail access. Genealogists and researchers can trace early ranger outposts like Soldier Basin R.s. and follow the Northwestern Pacific RR near Island Mountain. - 1922 Map of Island Mountain
1922 Island Mountain1922 Print · USGSNorthern California forest lands and river canyons are detailed in this early twenties tactical survey. Genealogists and researchers can locate remote outposts like Zenia and Hoaglin, or trace the rugged banks of the Mad River and Eel River. - 1931 Map of Hoaglin
1931 Hoaglin1931 Print · USGSThe Trinity and Van Duzen river systems define this high country during the early 1930s, when remote ranches and forest stations provided the primary human footprint. Researchers can trace family-named sites like Haine Ranch and Blossom Cabin, or locate the isolated Lake Mtn Sch. - 1935 Map of Hoaglin
1935 Hoaglin1935 Print · USGSTrinity and Mendocino counties are captured here in the mid-1930s, documenting a landscape of isolated valleys and mountain ranches. Researchers can trace family homesteads like Russ Place and Shannon Place or locate early schools including Cover Sch and Lake Mtn Sch.3 unique versions available - 1955 Map of Kettenpom, 1957 Print
1955 Kettenpom1957 Print · USGSTrinity County ranching and mining life are documented here in the mid-1950s as the Forest Service managed the rugged backcountry. Researchers can trace family holdings like Witter Ranch and find the location of the Island Mtn Mine or the Hoaglin Sch.3 unique versions available - 1958 Map of Redding
1958 Redding1958 Print · USGSNorthern California's valley and mountain landscapes are captured in the late fifties, showing the region as new reservoirs reshaped the river systems. Genealogists and historians can trace rail-side towns like Cottonwood, the military presence at Red Bluff Air Force Station, and mountain outposts like Weaverville.5 unique versions available - 1967 Map of Lake Mountain, 1969 Print
1967 Lake Mountain1969 Print · USGSTrinity County ranching and rail infrastructure are captured here in the late sixties. Researchers can trace the Northwestern Pacific Railroad through Island Mountain or locate family sites like Jamison Ranch and Hoaglin.2 unique versions available - 1979 Map of Garberville, 1996 Print
1979 Garberville1996 Print · USGSThe redwood forests and river canyons of Humboldt and Trinity counties are shown here in the late seventies. Genealogists and historians can trace rail-side life along the Northwestern Pacific RR or locate small settlements like Fort Seward, Alderpoint, and Zenia. - 1996 Map of Lake Mountain, 2000 Print
1996 Lake Mountain2000 Print · USGSTrinity County ranchlands and river canyons are preserved here during the late nineties, showcasing a landscape of high-altitude peaks and remote outposts. Researchers can trace the Northwestern Pacific line past Island Mountain or locate family sites like Jamison Ranch and Frazier Gardens. - 1997 Map of Lake Mountain, 2001 Print
1997 Lake Mountain2001 Print · USGSTrinity County ranching and timber lands are documented here in the late twentieth century, showing a remote landscape of high ridges and forest inholdings. Researchers can locate family landmarks such as Jamison Ranch, the Lake Mountain Landing Strip, and Prospect Mines.
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