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historical topo map of Humboldt County, CA in 1978

1978 Map of Blake Mountain

USGS Topo · Published 1978

This historical map portrays the area of Blake Mountain in 1978, primarily covering Humboldt County as well as portions of Trinity County. Featuring a scale of 1:24000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Blake Mountain region at the time. Published in 1978, it is the sole known edition of this map.

Map Details

Date Portrayed1978
Date Published1978
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions20.25 x 26.39 inches

Editions of this 1978 Blake Mountain Map

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

Historical Maps of Humboldt County Through Time

107 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain