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1975 Map of Harrison Mtn., 1981 Print
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1975 Map of Harrison Mtn.

USGS Topo · Published 1981

About this map

The northern reaches of San Bernardino meet the rising slopes of the San Bernardino Mountains in this mid-1970s orthophotoquad. Produced by the U.S. Geological Survey in cooperation with the Soil Conservation Service, this map utilizes aerial imagery from September 1975 to document the distinct boundary between urban development and the steep, undeveloped terrain of the Harrison Mtn. region. While the lower southwestern corner shows a structured grid of residential streets and industrial plots, the remainder of the landscape is dominated by complex drainages and fire breaks that traverse the ridges. This photographic record captures a specific moment in the growth of Southern California, showing where the expansion of the city begins to negotiate with the natural geography of the Transverse Ranges.

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Map Details

Date Portrayed1975
Date Published1981
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21.4 x 26.7 inches

Editions of this 1975 Harrison Mtn. Map

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

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain