1940s Maps of San Luis Obispo County, California

1. 1941 Map of Bradley

   

   1941 Bradley

   1941 Print · USGS

   Coastal California ranching and rail life are recorded here during the early years of the war. Genealogists and local historians can locate early homesteads and schoolhouses like Hames School or trace the Southern Pacific Coast Line through Bradley.

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4. 1941 Map of Cape San Martin

   

   1941 Cape San Martin

   1941 Print · USGS

   The central California coast was a landscape of remote mining claims and family ranchlands during the early 1940s. Trace the history of the Los Burros Mine and the W R Hearst Foremans Headquarters as the Coast Highway winds past Gorda P O.

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7. 1941 Map of Bryson

   

   1941 Bryson

   1941 Print · USGS

   The Santa Lucia Range and the valley of the Nacimiento River come into focus in this early 1940s survey. Genealogists can locate family holdings like Graves Ranch or Davis Ranch and study local education at Hesperia School.

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10. 1941 Map of Port San Luis

    

    1941 Port San Luis

    1941 Print · USGS

    Coastal San Luis Obispo County is captured here just before the Second World War, showing the steep interface of the Diablo Range and the sea. Researchers can trace the maritime landscape around Port San Luis and identify distinctive coastal landmarks like Pecho Rock and Saddle Pk.

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13. 1941 Map of Caliente Mountain, 1956 Print

    

    1941 Caliente Mountain

    1956 Print · USGS

    The Carrizo Plain and its surrounding mountain ranges are captured here in the early 1940s, documenting a landscape of remote cattle ranches and high desert basins. Researchers can trace the legacy of family holdings like Spanish Ranch and Washburn Ranch or locate natural features such as Soda Lake and Painted Rock.

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16. 1941 Map of McPherson Peak, 1956 Print

    

    1941 McPherson Peak

    1956 Print · USGS

    The northern Santa Barbara backcountry is seen here in the early 1940s, highlighting the transition from the Cuyama River valley into the high Sierra Madres. Researchers can locate remote ranch sites and forest landmarks such as Hinsdale Ranch, the Wasioja Sch, and the Hurricane Deck ridge.

    3 unique versions available

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19. 1942 Map of Guadalupe

    

    1942 Guadalupe

    1942 Print · USGS

    The Central Coast during the early war years reveals a landscape of coastal rail stations and ranching canyons along the Santa Barbara shore. Researchers can trace the Southern Pacific line through Surf and Honda to find vanished spurs and schools like Lynden Sch.

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22. 1942 Map of Adelaida

    

    1942 Adelaida

    1942 Print · USGS

    The Santa Lucia Range was still a rugged frontier of ranching and quicksilver mining in the early 1940s. Genealogists can trace family holdings like Kentucky Ranch and old rural schoolhouses including Summit School and Asuncion School.

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25. 1942 Map of San Luis Obispo

    

    1942 San Luis Obispo

    1942 Print · USGS

    San Luis Obispo and the surrounding Santa Lucia Range are captured here just before the mid-century expansion, centered on the Southern Pacific rail line. Researchers can trace early campus boundaries at the California Polytechnic School and find rural landmarks like Stowe Sch and Eagle Ranch.

    2 unique versions available

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28. 1942 Map of Lompoc

    

    1942 Lompoc

    1942 Print · USGS

    Santa Barbara County at the start of World War II reveals a landscape of missions, ranching, and coastal rail. Researchers can trace the Pacific Coast Railroad, locate historic schools like Sisquoc Sch, and find the remote Asphaltum Mine.

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31. 1942 Map of Bryson

    

    1942 Bryson

    1942 Print · USGS

    Coastal range foothills and river valleys are shown here during the early years of the war, as military holdings expanded over historic ranch lands. Researchers can trace the boundaries of the Hunter Liggett Military Reservation and locate old landmarks like the Quicksilver Mine and Playa School.

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34. 1942 Map of Arroyo Grande

    

    1942 Arroyo Grande

    1942 Print · USGS

    The San Luis Obispo coastline and the fertile Cienega Valley are shown here in the early 1940s, as steam and narrow-gage rails still shaped the local economy. Genealogists can locate vanished schools like Belleview Sch and trace the paths of the Pacific Coast Railway and Southern Pacific Railroad through Oceano and Edna.

    3 unique versions available

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37. 1942 Map of Cape San Martin

    

    1942 Cape San Martin

    1942 Print · USGS

    The Monterey coast and Santa Lucia Range are captured here during the early 1940s, just as military use of the backcountry intensified. Genealogists and researchers can locate remote homesteads like the Krenkel Ranch and Dutra Place, alongside several workings like the Polar Star Mine.

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40. 1942 Map of Santa Maria

    

    1942 Santa Maria

    1942 Print · USGS

    Santa Barbara County was a hub of petroleum production and river-valley agriculture in the early 1940s. Genealogists and local historians can trace the early footprints of Santa Maria, the Santa Maria Valley Oil Field, and rural stops like Bicknell and Orcutt.

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43. 1942 Map of Branch Mountain

    

    1942 Branch Mountain

    1942 Print · USGS

    San Luis Obispo and Santa Barbara counties meet along the high ridges and river canyons of the interior in the early 1940s. Genealogists and historians can trace pioneer outposts like Scott Ranch and Avenales Ranch or locate the remote Pine Canyon Guard Sta.

    3 unique versions available

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46. 1942 Map of Point Sal

    

    1942 Point Sal

    1942 Print · USGS

    The Santa Barbara coast during the early war years is shown here in high detail, from the river valley down to the Pacific cliffs. Genealogists and researchers can trace the rail settlements at Narlon, the rural community at Casmalia, and the local Bonita Sch.

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49. 1942 Map of Caliente Mtn, 1952 Print

    

    1942 Caliente Mtn

    1952 Print · USGS

    Coastal California’s interior highlands were a domain of remote ranching and seasonal water sources during the early 1940s. Genealogists and historians can trace old homesteads like Goodwin Ranch and Spanish Ranch or locate the historic Painted Rock landmark.

    2 unique versions available

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52. 1942 Map of Ballinger Canyon, 1958 Print

    

    1942 Ballinger Canyon

    1958 Print · USGS

    The high desert canyons of the California interior come to life in the early 1940s at the convergence of four county lines. Researchers can trace historic ranch sites like Klipstein Ranch and remote outposts such as Camp Dix near the Cuyama Valley floor.

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55. 1942 Map of East of Cuyama Ranch, 1959 Print

    

    1942 East of Cuyama Ranch

    1959 Print · USGS

    The Cuyama Valley at the start of the 1940s reveals a landscape of isolated ranching and early petroleum discovery. Genealogists and historians can trace family holdings like Coulter Ranch and Whitner Ranch near the Cuyama School.

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58. 1942 Map of Tent Hills, 1960 Print

    

    1942 Tent Hills

    1960 Print · USGS

    In the early 1940s, this pocket of the California Coast Ranges was a rugged intersection of ranch land and high ridges. Genealogists and historians can trace old homestead boundaries and early routes through Cottonwood Pass, Iron Spring Ranch, and Fahey Ranch.

    2 unique versions available

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61. 1943 Map of Packwood

    

    1943 Packwood

    1943 Print · USGS

    The Temblor Range and the border of Kern and San Luis Obispo counties are captured here during the early 1940s. Genealogists and local historians can trace isolated ranch sites like W M Cook and Sumners or locate the remote Cemetery and Bitterwater Pump Station.

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64. 1943 Map of Grant Lake

    

    1943 Grant Lake

    1943 Print · USGS

    Ranching outposts and high-desert canyons define this region of the California coast ranges during the early war years. Family-named landmarks such as Iverson Ranch and McIsaac can be traced alongside Choice Valley School and Grant Lake.

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67. 1943 Map of Shandon

    

    1943 Shandon

    1943 Print · USGS

    Shandon and the surrounding San Luis Obispo ranchlands are shown here during the early 1940s as an active agricultural community. Researchers can trace historic family holdings like the Sacramento Ranch and Hillman Ranch or locate landmarks such as the Shandon School.

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70. 1943 Map of Paso Robles

    

    1943 Paso Robles

    1943 Print · USGS

    Mid-century San Luis Obispo County is defined here by the river-and-rail corridor connecting Paso Robles to its rural agricultural outposts during the war years. Genealogists and historians can trace local family landmarks and district hubs like San Miguel Mission, Creston, and the Oak Flat School.

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73. 1943 Map of Commatti Canyon

    

    1943 Commatti Canyon

    1943 Print · USGS

    Eastern San Luis Obispo County ranches and canyons are captured here during the early years of the Second World War. Genealogists and researchers can trace family-named sites like Alfalfa Ranch, Commatti Ranch, and the Alliance School.

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