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Old Maps of Tassajara, California for Academic Research

Study the evolution of Tassajara with 12 high-resolution historic maps. Whether you're teaching, researching, or modeling changes in land use, these maps provide essential visual documentation of urban, environmental, and geographic change.

  • Analyze long-term change: Track patterns in development, transportation, and natural features.
  • Ideal for environmental or urban studies: Support academic projects with primary historical map data.
  • Use in the classroom or lab: Educators and researchers rely on these maps to bring historical context to life.

These maps are a powerful tool for teaching, research, and visualizing how Tassajara has changed over the decades.

Tassajara, CA maps

(12)
  1. 1896 Map of Mt. Diablo, 1964 Print
    1896 Map of Mt. Diablo, 1964 Print
    1896 Mt. Diablo
    1964 Print · USGS
    The northern slopes of the Diablo Range come alive in the 1890s, where mining settlements like Nortonville and Somersville thrived alongside the Empire R. R. and Star Mine. Trace early rail lines, family landmarks, and the rural roots of Danville and San Ramon.
  4. 1898 Map of Mt. Diablo
    1898 Map of Mt. Diablo
    1898 Mt. Diablo
    1898 Print · USGS
    Contra Costa County at the end of the nineteenth century was a rugged landscape of coal mining camps and cattle valleys. Genealogists and local historians can trace the early footprints of Nortonville, Stewartville, and the remote Star Mine nestled among the peaks of Monte del Diablo.
    7 unique versions available
  7. 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.
  10. 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.
  13. 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
  16. 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.
  19. 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
  22. 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).
  25. 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
  28. 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.
  31. 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.
  34. 2021 Map of Tassajara, 2021 Print
    2021 Map of Tassajara, 2021 Print
    2021 Tassajara
    2021 Print · USGS
    The eastern foothills of the Diablo Range come into focus in the early 2020s, showing a landscape defined by deep canyons and a extensive ridge-top trail network. Researchers can trace local landmarks like Tassajara, the heights of Oyster Point, and water sources at Sycamore Spring.
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Frequently asked questions

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