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1942 Map of Mt. Gleason

Name: 1942 Topographic Map of Mt. Gleason
Creator: U.S. Geological Survey
Published: 1948
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1948

About this map

Mt. Gleason towers over this section of the San Gabriel Mountains, serving as a high-elevation lookout point for the surrounding Angeles National Forest. In this mid-century period, the landscape is defined by the critical management of water and timber resources, evidenced by the Little Gleason Forestry Plantation and the presence of numerous springs and named water sources. The rugged interior is accessible via the Angeles Forest Highway and fire management infrastructure like the prominent firebreak systems carved into the ridges.

Local industry and recreation appear through the Monte Cristo Mine and the Colby Ranch settlement. In the south, the Big Tujunga Creek winds through The Narrows toward the Big Tujunga Reservoir, reflecting the infrastructure needed to support the growing population of the nearby Los Angeles basin. Named landmarks such as Messenger Flats and Hidden Springs provide specific points of interest for historical researchers looking at early forest service activity and mountain habitation.