1900s (20th Century) Maps of Contra Costa County, California

1. 1901 Map of Karquines

   

   1901 Karquines

   1901 Print · USGS

   Northern California at the dawn of the twentieth century shows a landscape defined by the deep-water Karquines Strait and industrial rail hubs. Researchers can trace the waterfront activity of Benicia, Vallejo, and Martinez or the tidal marsh outposts at Drawbridge and Rush Landing.

   6 unique versions available

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4. 1902 Map of Napa

   

   1902 Napa

   1902 Print · USGS

   The Napa Valley and Carquinez Strait are captured at the turn of the century, showing a landscape defined by maritime military posts and early vineyards. Genealogists and historians can trace the Mare Island Navy Yard, the Insane Asylum, and rail stops at Zinfandel and Rutherford.

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7. 1906 Map of Pleasanton

   

   1906 Pleasanton

   1906 Print · USGS

   The Livermore and Amador Valleys are captured here at the turn of the century as they transitioned from ranch lands to thriving rail hubs. Genealogists and historians can trace family locations near Mission San Jose, the old Dougherty Post Office, and the junction at Niles.

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10. 1907 Map of Antioch, 1955 Print

    

    1907 Antioch

    1955 Print · USGS

    The Suisun Bay and Sacramento Delta regions are captured here in the early twentieth century during a period of agricultural and industrial expansion. Local historians can trace family-named river ports like Lingos Landing and rural landmarks such as Scandia School or the settlement of Birds Landing.

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13. 1908 Map of Antioch

    

    1908 Antioch

    1908 Print · USGS

    The convergence of the great California rivers in the early twentieth century shows a landscape of busy water landings and growing rail towns. Trace the industrial roots of Antioch or locate vanished landings like Palmetto Landing and Duttons Landing along the sloughs.

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16. 1910 Map of Bouldin

    

    1910 Bouldin

    1910 Print · USGS

    The Sacramento-San Joaquin Delta at the turn of the century is a labyrinth of reclaimed island tracts and sloughs. Trace the early river landings at Central Landing and Blakes Landing, or locate the Old Cannery along the South Fork Mokelumne River.

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19. 1910 Map of Jersey

    

    1910 Jersey

    1910 Print · USGS

    The California Delta at the start of the century was a landscape of river-bound islands and vital steamboat landings. Genealogists and historians can trace old waterfront sites like Larsen Landing and Jersey, or the rail path of the A T and S F R R.

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22. 1911 Map of Byron Hot Springs

    

    1911 Byron Hot Springs

    1911 Print · USGS

    Contra Costa County at the beginning of the twentieth century shows a landscape transitioning from ranching to railroad-driven tourism. Historians can trace the footprint of the Byron Hot Springs resort and the early rail infrastructure serving Byron.

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25. 1913 Map of Woodward Island

    

    1913 Woodward Island

    1913 Print · USGS

    The reclaimed islands of the California Delta appear in this pre-war survey as a sophisticated network of levees and rail. Trace early commercial hubs like the Cannery at Woodward and the rural Middle River Moorland P O.

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28. 1914 Map of Brentwood

    

    1914 Brentwood

    1914 Print · USGS

    Brentwood and the surrounding orchards thrived in the early twentieth century as a dual-railroad crossroads. Researchers can trace early rural life through the Iron House School, the Southern Pacific RR tracks, and the Oil Pumping Station.

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31. 1914 Map of Bethany

    

    1914 Bethany

    1914 Print · USGS

    The San Joaquin Delta was a maze of engineered waterways and rail lines just before the First World War. Researchers can trace the original routes of the Bethany Ferry and locate early landmarks like Mountain House and the Lammersville School.

    2 unique versions available

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34. 1915 Map of Haywards

    

    1915 Haywards

    1915 Print · USGS

    The East Bay shoreline and inland foothills are shown here in the mid-1910s during a height of coastal industry. Genealogists and historians can trace old shipping points like Mulford Landing, early salt operations at Union City Salt Works, and the rail lines of the Western Pacific.

    4 unique versions available

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37. 1915 Map of Concord

    

    1915 Concord

    1915 Print · USGS

    Contra Costa and Alameda counties are shown here just before the mid-century population boom, when the East Bay was a landscape of ranchos and rail stops. Genealogists can trace family footprints in small 1910s settlements like Moraga, Pacheco, and Lafayette.

    5 unique versions available

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40. 1915 Map of San Francisco

    

    1915 San Francisco

    1915 Print · USGS

    San Francisco and the East Bay appear at a pivotal moment just before the First World War, featuring the grand layout of the Panama-Pacific International Exposition. Genealogists and historians can trace the early rail networks of the Key Route Pier, the industrial waterfront at Winehaven, and historic landmarks like Cliff House.

    6 unique versions available

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43. 1916 Map of Lone Tree Valley

    

    1916 Lone Tree Valley

    1916 Print · USGS

    Contra Costa County at the onset of the motor age reveals a landscape of ranching valleys and early energy infrastructure. Researchers can trace the routes of Sand Creek and Marsh Creek, locate the isolated Deer Valley School, and see the early Oil Tanks in Markley Canyon.

    2 unique versions available

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46. 1916 Map of Mare Island

    

    1916 Mare Island

    1916 Print · USGS

    The northern San Pablo Bay region comes alive in this survey, showcasing a landscape of tidal marshes and rail-driven growth during the mid-1910s. Researchers can trace the layout of the Mare Island Navy Yard, the remote rail stop at Wingo, and the rural classrooms of Fly School.

    4 unique versions available

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49. 1916 Map of Byron Hot Springs

    

    1916 Byron Hot Springs

    1916 Print · USGS

    Eastern Contra Costa County was a landscape of historic land grants and early rail travel in the years before the Great War. Researchers can trace the original Southern Pacific route serving Byron and the specialized resort grounds of Byron Hot Springs.

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52. 1916 Map of Byron

    

    1916 Byron

    1916 Print · USGS

    In the early twentieth century, the Contra Costa and San Joaquin borderlands were a landscape of reclaimed delta tracts and rising hill country. Researchers can trace early railroad alignments and rural life at Byron Hot Sprs, the Bethany Ferry, and the Vasco School.

    3 unique versions available

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55. 1918 Map of Honker Bay

    

    1918 Honker Bay

    1918 Print · USGS

    The industrial waterfront of Contra Costa and Solano counties comes alive in this survey of the Sacramento River delta. Trace the rail networks at Pittsburg and find historic riverfront stops like Birds Landing and Yolo Landing.

    2 unique versions available

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58. 1918 Map of Collinsville

    

    1918 Collinsville

    1918 Print · USGS

    The California Delta at the turn of the century shows a bustling junction of river and rail commerce. Researchers can trace early infrastructure around Antioch, locate riverfront sites like Montezuma Landing, and follow the Southern Pacific through the Los Medanos area.

    2 unique versions available

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61. 1940 Map of Byron, 1943 Print

    

    1940 Byron

    1943 Print · USGS

    The California Delta meets the coastal hills during the early 1940s, showing a transition from the orchards of Brentwood to the intricate waterways of the islands. Researchers can trace historic schools like Iron House Sch, rail stops at Knighten Sta, and the famous Byron Hot Springs.

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64. 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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67. 1941 Map of Pleasanton

    

    1941 Pleasanton

    1941 Print · USGS

    The Livermore Valley and East Bay hills are captured here in the early 1940s, showing a world of cattle ranchos and railroad towns. You can trace early landmarks like the Mission San Jose de Guadalupe, the Livermore Airport, and several rural one-room schoolhouses like Antone Sch.

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70. 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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73. 1942 Map of Concord

    

    1942 Concord

    1942 Print · USGS

    The East Bay interior was a landscape of expanding valley towns and deep-rooted ranching tracts in the early 1940s. Genealogists and historians can trace rail-era settlements like Concord, Lafayette, and Walnut Creek alongside local landmarks like St Marys College and Sherman Field.

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