1940s Maps of Napa County, California

1. 1940 Map of Carquinez Strait, 1963 Print

   

   1940 Carquinez Strait

   1963 Print · USGS

   The industrial waterfronts of Solano and Contra Costa counties are captured here just before the mid-century boom. Genealogists and historians can trace the rail-and-water networks of Port Costa, Benicia, and Vallejo, or locate landmarks like the Carquinez Cem and the Benicia Auto Ferry.

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4. 1942 Map of Mare Island

   

   1942 Mare Island

   1942 Print · USGS

   The northern reaches of San Pablo Bay come alive in this wartime survey, showing a landscape of vital naval yards and marshland agriculture. Genealogists and historians can trace rail depots like Napa Junction, rural landmarks like American Canyon School, and the industrial waterfronts of Vallejo and Oleum.

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7. 1942 Map of Carquinez

   

   1942 Carquinez

   1942 Print · USGS

   The industrial waterfront of the Carquinez Strait is captured here during the early years of the war. Researchers can trace the complex rail networks of the Southern Pacific and locate established neighborhoods in Vallejo, Benicia, and Crockett.

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10. 1942 Map of Sonoma

    

    1942 Sonoma

    1942 Print · USGS

    The Napa and Sonoma valleys are captured here during the early 1940s, showing the established rail and agricultural networks of the North Bay. Researchers can trace historic landmarks like the Veterans Home, the Quick Silver Mine, and early vineyard sites at Zinfandel and Rutherford.

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13. 1942 Map of Mt. Vaca

    

    1942 Mt. Vaca

    1942 Print · USGS

    The Vaca Mountains and eastern Napa County are captured during the early 1940s, showing a landscape of deep canyons and rising valley towns. Researchers can trace the rail corridors of the Southern Pacific near Fairfield or locate early water works like the Gordon Valley Dam.

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16. 1942 Map of St. Helena, 1966 Print

    

    1942 St. Helena

    1966 Print · USGS

    Napa County during the early 1940s is defined by its rural school districts and the emerging institutional centers of the Howell Mountain area. Genealogists can trace family footprints through the Silverado Trail, the Aetna Mine, and small schools like Hardin Sch.

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19. 1943 Map of Morgan Valley

    

    1943 Morgan Valley

    1943 Print · USGS

    Northern California ranching and mining country are captured in the early 1940s at the junction of Lake, Napa, and Yolo counties. Researchers can locate the Morgan Valley Sch and several mines like the Harrison Mine and Red Elephant Mine.

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22. 1943 Map of Capay, 1945 Print

    

    1943 Capay

    1945 Print · USGS

    Yolo and Napa counties are captured here in the mid-1940s, documenting the valley floor and ridge-lines before the creation of Lake Berryessa. Researchers can trace family ranch lands and lost school sites like Monticello, Oak Grove Sch, and Gunn Ranch.

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25. 1943 Map of Calistoga, 1955 Print

    

    1943 Calistoga

    1955 Print · USGS

    Upper Napa Valley and the rugged Lake County border are captured here during the 1940s, a period defined by mercury mining and early tourism. Researchers can trace family-named landmarks and industrial sites like the Oat Hill Mine, Mark West Springs, and the Petrified Forest.

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28. 1944 Map of Santa Rosa

    

    1944 Santa Rosa

    1944 Print · USGS

    Sonoma County transitions from its early land-grant heritage to a mid-century agricultural hub in the years following the 1942 revision. Genealogists and researchers can locate numerous country schools and family-linked landmarks like Sonoma State Home, Adobe Fort, and Grange Hall.

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31. 1944 Map of Morgan Valley

    

    1944 Morgan Valley

    1944 Print · USGS

    Upper California ranching and mercury mining country are shown here in the mid-1940s near the corner of Lake, Colusa, and Napa counties. Researchers can trace historic operations like Reid Mine, the old Morgan Valley Sch, and local hubs like Knoxville.

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34. 1945 Map of Capay

    

    1945 Capay

    1945 Print · USGS

    The Berryessa and Capay valleys appear here in the final years before the creation of Lake Berryessa, documenting a lost agricultural landscape. Genealogists can trace family ranch holdings like Scott Ranch and Corbin Ranch alongside rural landmarks like Monticello and Apricot Sch.

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37. 1945 Map of Calistoga

    

    1945 Calistoga

    1945 Print · USGS

    Calistoga and the surrounding tri-county ridges are documented here during the mid-forties, capturing a landscape defined by mercury and silver mining. Researchers can trace the Southern Pacific RR and locate rural landmarks like the Silverado Mine or Mark West Springs.

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40. 1945 Map of Rumsey

    

    1945 Rumsey

    1945 Print · USGS

    The Capay Valley and northern Sacramento Valley meet here in the mid-1940s, showing a landscape of secluded canyons and rail-side settlements. Genealogists can trace family footprints near Rumsey, Guinda, and rural schoolhouses like Wildwood Sch.

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43. 1945 Map of St. Helena

    

    1945 St. Helena

    1945 Print · USGS

    Napa County at the end of the war shows a landscape of growing valley towns, mountain colleges, and rural mining outposts. Researchers can trace the path of the Southern Pacific RR or locate family roots near Central Sch and the Aetna Mine.

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46. 1947 Map of Santa Rosa

    

    1947 Santa Rosa

    1947 Print · USGS

    Northern California in the late 1940s was a landscape of agricultural valleys and vital rail hubs. Trace the historic routes of the Northwestern Pacific through Healdsburg or explore the mid-century waterfronts of Vallejo and Benicia near Mare Island.

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49. 1949 Map of Santa Rosa

    

    1949 Santa Rosa

    1949 Print · USGS

    The North Bay and Wine Country appear here in the late 1940s, when the Northwestern Pacific RR still dominated regional transit. Genealogists and historians can trace old coastal outposts like Anchor Bay Settlement and the early layout of Santa Rosa.

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52. 1949 Map of Cuttings Wharf, 1956 Print

    

    1949 Cuttings Wharf

    1956 Print · USGS

    The Napa River delta in the late 1940s is a maze of tidal sloughs and growing railroad towns. Genealogists can trace family names at Cuttings Wharf, old rural schools like Los Amigos Sch, and early aviation sites like Vallejo Sky Harbor.

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