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1942 Map of Mt. Gleason

Name: 1942 Topographic Map of Mt. Gleason
Creator: U.S. Geological Survey
Published: 1942
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1942

About this map

Mt. Gleason stands as the high point of this 1942 survey, featuring a prominent Lookout and the high-elevation camp at Messenger Flats. Published by the U.S. Geological Survey and based on fieldwork by C.A. Ecklund, the map documents a transition in mountain access within the Angeles National Forest. The Angeles Crest Highway winds through the southeastern portion of the sheet, providing a modern artery through the steep drainage systems of Big Tujunga Canyon and Mill Creek.

Resource extraction and mountain recreation coexist here during the early war years. The Monte Cristo Mine remains a notable landmark in the canyon floor, while more remote reaches like The Narrows and Colby Ranch indicate established footholds in the deep backcountry of the San Gabriel Mountains. The presence of a prominent Transmission Line and numerous Firebreak clearings highlights the critical infrastructure managed by the board of supervisors and county surveyor during this era.