1942 Map of Petaluma
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1942 Map of Petaluma

USGS Topo · Published 1942

About this map

Petaluma and its surrounding wetlands form the heart of this coastal California region during the early 1940s. The landscape is defined by the winding course of Petaluma Creek and its transition into False Bay, where the Northwestern Pacific railroad tracks trace the water's edge through Lakeville and Donahue. The map captures a transition from industrial hubs and river transport to sprawling ranch lands, including the Big Rock Ranch and Alameda Ranch. Education and institutional history are prominent, evidenced by numerous rural schoolhouses like Olompali School and Lagunita School, alongside the Marin County Hospital and the ecclesiastical grounds of St Vincent School. Transport corridors like the Sir Francis Drake Highway connect inland settlements such as San Geronimo and Lagunitas to the tidal valleys, documenting the area's layout just as the mid-century suburban expansion began to reshape the Novato Valley.


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Map Details

Date Portrayed1942
Date Published1942
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.6 x 19.8 inches

Editions of this 1942 Petaluma Map

This is the sole edition of this map. No revisions or reprints were ever made.


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Source Details

CopyrightPublic Domain