1942 Map of Mt. Gleason

About this map

Mt Gleason towers over this section of the San Gabriel Mountains, part of a complex landscape surveyed in the mid-1930s. The terrain is defined by dramatic elevation changes and a dense network of watercourses, including Fox Creek and Mill Creek, which feed into the Big Tujunga Canyon. The presence of the Big Tujunga Reservoir and the winding Angeles Crest Hwy. reflects the infrastructure development within the Angeles National Forest during this era. Small interior settlements and landmarks such as Messenger Flats and Colby Ranch provide specific points of interest for local historians, while the various named springs like Aliso Spring indicate the critical importance of water sources in this steep environment. A prominent Transmission Line and numerous firebreaks cut across the ridges, illustrating the early management and utility of this mountain region.