
The Angeles National Forest dominates this 1940 survey, centering on the rugged confluence of the San Gabriel River and its varied forks. This map records the canyon culture of the era, where small settlements like Camp Bonita and Williams Camp served as mountain retreats and operational hubs. A network of fire protection is evident through the High Line Firebreak and the presence of the San Gabriel Guard Station, reflecting the intensive management of these high-altitude watersheds near the Los Angeles basin.
45 named features on this map. Tap any name to fly to it.
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3 editions found
1894 · Pomona
USGS Topo · 1:62,500
1897 · Pomona
USGS Topo · 1:62,500
1897 · Cucamonga
USGS Topo · 1:62,500
1898 · Pomona
USGS Topo · 1:62,500
1900 · Cucamonga
USGS Topo · 1:62,500
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1903 · Rock Creek
USGS Topo · 1:62,500
1903 · Cucamonga
USGS Topo · 1:62,500
1903 · San Antonio
USGS Topo · 1:62,500
1904 · Pomona
USGS Topo · 1:62,500