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1945 Map of Black Mtn
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1945 Map of Black Mtn

USGS Topo · Published 1945

About this map

Lane Ranch and the Caswells settlement mark the developed fringe of the Los Angeles National Forest at the end of World War II. The landscape is defined by the steep drainage basins of Piru Creek and Canada de los Alamos, where narrow canyons dictated the path of early automotive infrastructure. The presence of the Southern Calif Gas Co Maint Sta No 5 and multiple Highway Maint Sta locations illustrates the vital role this corridor played in regional utility and transport logistics. Higher elevations are dotted with administrative outposts such as the Piru Guard Stat and Smith Fork Guard Sta, while the Bayley Homestead provides a glimpse into the late-stage ranching and homesteading history of the Los Angeles-Ventura county line. Local landmarks like Pyramid Rock and Ridge Tavern anchor this high-altitude transition between the valley and the peaks of Black Mtn.

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Map Details

Date Portrayed1945
Date Published1945
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:31,680
Physical Dimensions17 x 21.7 inches

Editions of this 1945 Black 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