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1951 Map of Blocksburg
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1951 Map of Blocksburg

USGS Topo · Published 1951

About this map

Blocksburg serves as a central point in this mid-century survey of the California Coast Ranges, where the rugged headwaters of the Van Duzen River and Mad River divide the landscape. The map captures a transition in land use, showing a network of remote ranching outposts such as Gunlock Ranch, Bliss Ranch, and the Windbigler Ranch alongside growing recreational and conservation footprints. The establishment of Six Rivers National Forest is well-documented here, including the Mad River Ranger Sta and several public camps. Transportation patterns are defined by the narrow corridors of the Larabee Valley and the Northwestern Pacific railroad hugging the riverbanks. Higher elevations are marked by utilitarian and lookout sites like the Lassic Lookout and the unique Snowline Fox Farm, providing a detailed look at the rural economy of Humboldt and Trinity counties before more modern infrastructure reached these ridges.

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Map Details

Date Portrayed1951
Date Published1951
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16 x 20.8 inches

Editions of this 1951 Blocksburg Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain