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1900s (20th Century) Maps of Tassajara, California

Explore 9 historic maps of Tassajara 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 Tassajara'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 Tassajara's history through authentic maps from the 1900s. This is your window into the past.

Tassajara, CA maps

(9)
  1. 1943 Map of Mt. Diablo
    1943 Map of Mt. Diablo
    1943 Mt. Diablo
    1943 Print · USGS
    The Mt. Diablo foothills and San Ramon Valley are captured here during the early 1940s, showcasing a landscape of cattle ranches and remote schoolhouses. Genealogists and local historians can locate early landmarks like Blackhawk Ranch, Cowell, and the Morgan Territory Sch.
  4. 1947 Map of San Jose, 1948 Print
    1947 Map of San Jose, 1948 Print
    1947 San Jose
    1948 Print · USGS
    Northern California's heartland is captured here just after the war, showing the rapid growth of the Santa Clara and Central Valleys. Researchers can trace the legacy of rail and water at Castle Air Force Base, Stockton, and the Hetch Hetchy Aqueduct.
  7. 1953 Map of Tassajara, 1954 Print
    1953 Map of Tassajara, 1954 Print
    1953 Tassajara
    1954 Print · USGS
    The foothills of Contra Costa and Alameda counties are captured here in the early 1950s, revealing a landscape of historic land grants and canyon ranching. Genealogists and local historians can trace the foundations of the area at Tassajara and locate the former sites of the Tassajara Sch and Highland Sch.
    4 unique versions available
  10. 1956 Map of San Jose
    1956 Map of San Jose
    1956 San Jose
    1956 Print · USGS
    Central California in the mid-fifties reveals the transition from sprawling orchards to growing urban hubs like San Jose and Stockton. Genealogists and historians can trace the rail-era landscape of the Mother Lode through Chinese Camp and Tuttletown, or follow the water through the Joaquin River and Calaveras Reservoir.
  13. 1962 Map of San Jose
    1962 Map of San Jose
    1962 San Jose
    1962 Print · USGS
    Central California in the early sixties showcases the expansion of the San Joaquin and Santa Clara valleys. Researchers can trace the rail-to-road transition along the Southern Pacific RR or locate landmarks like Castle USAF Base and Loma Prieta.
    4 unique versions available
  16. 1966 Map of San Jose
    1966 Map of San Jose
    1966 San Jose
    1966 Print · USGS
    Central California in the mid-1960s reveals a landscape of massive irrigation projects and expanding Cold War military footprints. Researchers can trace the rail-and-river network of the San Joaquin Valley or locate specialized sites like Castle Air Force Base and the Sharp General Depot (Military).
  19. 1989 Map of Stockton
    1989 Map of Stockton
    1989 Stockton
    1989 Print · USGS
    During the late 1980s, the California Delta and San Joaquin Valley saw a massive convergence of water infrastructure and military logistics. Researchers can trace the sprawling Lawrence Livermore Laboratory (Univ of Calif) and Sharpe Army Depot alongside the complex waterways of Union Island and Victoria Island.
    2 unique versions available
  22. 1991 Map of Tassajara, 1995 Print
    1991 Map of Tassajara, 1995 Print
    1991 Tassajara
    1995 Print · USGS
    The Diablo Range backcountry of Contra Costa and Alameda counties is captured here in the early 1990s. Genealogists and local historians can locate the former sites of the Tassajara Sch and Highland Sch or trace the early Las Positas Grant boundary.
  25. 1996 Map of Tassajara, 1999 Print
    1996 Map of Tassajara, 1999 Print
    1996 Tassajara
    1999 Print · USGS
    The Contra Costa and Alameda county line runs through this landscape in the mid-nineties, showing a mix of state parklands and old ranching valleys. Genealogists can trace rural history at the Tassajara Sch (Abandoned) and the Highland Sch (Abandoned) sites.
End of results
Showing maps 1-9 of 9

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  • What are the different types of historical maps available for Tassajara?
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