1900s (20th Century) Maps of Boulder Park, California

1. 1931 Map of Carrizo, 1938 Print

   

   1931 Carrizo

   1938 Print · USGS

   Borderland life in the 1930s is defined by remote ranching outposts and vital desert springs along the international line. Trace old family sites and water sources like Campo P.O., Agua Caliente Hot Springs, and Laguna Ranch.

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4. 1939 Map of Jacumba, 1956 Print

   

   1939 Jacumba

   1956 Print · USGS

   The high-desert borderlands of San Diego and Imperial counties are documented here just before the 1940s. Researchers can trace the engineering of the San Diego and Arizona Eastern railway and locate remote sites like Smugglers Cave and the Asbestos Mine.

   2 unique versions available

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7. 1942 Map of Jacumba, 1944 Print

   

   1942 Jacumba

   1944 Print · USGS

   The high desert borderlands come alive in the 1940s as the railroad traverses the mountains into Imperial County. Researchers can trace the path of the San Diego and Arizona Eastern through Jacumba Hot Springs to remote sidings and desert claims like Mica Gem Mine.

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10. 1950 Map of San Diego, 1954 Print

    

    1950 San Diego

    1954 Print · USGS

    Coastal San Diego and the Baja California border region come alive in this mid-century survey. Trace the early layout of National City and Chula Vista, or locate historic landmarks like the San Diego and Arizona Eastern RR and Fort Rosecrans.

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13. 1954 Map of San Diego

    

    1954 San Diego

    1954 Print · USGS

    San Diego and the northern reaches of Baja California are captured here during a decade of rapid post-war growth and military expansion. Researchers can trace the mid-century shoreline of Mission Beach, find established tribal lands like Capitan Grande Indian Reservation, and follow the border crossing into Tijuana.

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16. 1955 Map of San Diego

    

    1955 San Diego

    1955 Print · USGS

    Southern California underwent massive growth in the post-war years, as suburban development pushed into the canyons and foothills. Researchers can trace the mid-century infrastructure of Lindbergh Field, the Otay River, and numerous sites like Lemon Grove.

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19. 1958 Map of San Diego, 1961 Print

    

    1958 San Diego

    1961 Print · USGS

    San Diego and its inland mountain ranges are captured here in the late fifties as coastal suburbs began to climb the mesas. Researchers can trace the mid-century footprint of Miramar Naval Air Station, the winding San Diego & Arizona Eastern Ry, and local landmarks like Cabrillo Nat Mon.

    4 unique versions available

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22. 1959 Map of Jacumba, 1961 Print

    

    1959 Jacumba

    1961 Print · USGS

    The High Desert and international borderlands are captured here in the late fifties. Trace the rail line through Carrizo Gorge or locate old mining sites like the Mica Gem Mine and Jade Mine.

    2 unique versions available

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25. 1959 Map of In-ko-pah Gorge, 1961 Print

    

    1959 In-ko-pah Gorge

    1961 Print · USGS

    The high desert borderlands come alive in this late-fifties survey of the steep transition from the Jacumba Mountains to the desert floor. Researchers can trace the path of old transit routes through In-Ko-Pah Gorge, finding the Stage Station Historical Marker and remote workings like the Easy Pickins Mine.

    3 unique versions available

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28. 1979 Map of El Cajon

    

    1979 El Cajon

    1979 Print · USGS

    Southern San Diego County and its mountain-to-desert transition are captured here in the late seventies. Researchers can trace the winding San Diego & Arizona Eastern RR, locate rural settlements like Jacumba, and explore the sprawling Cleveland National Forest.

    2 unique versions available

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31. 1997 Map of In-ko-pah Gorge, 2003 Print

    

    1997 In-ko-pah Gorge

    2003 Print · USGS

    The Jacumba Mountains and the international border define this high-desert territory in the late twentieth century. Researchers can locate remote mining claims like the Little Randsburg Mine and historical transit sites including the Stage Station Historical Marker.

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