
Joshua Tree National Monument dominates the high desert landscape in this mid-century survey, revealing a network of early mining and water infrastructure before the area's modern development. The presence of the Lost Horse Mine and Hidden Gold Mine underscores the region's hard-rock prospecting history, while remote outposts like Pinyon Wells and Lost Horse Well highlight the critical importance of water sources in the arid Lost Horse Valley. The terrain transitions from the jagged peaks of the Hexie Mtns and the Little San Bernardino Mountains down into a complex system of drainage ways, including Pushawalla Canyon and Berdoo Canyon. These canyons provided vital, if difficult, passage through the mountains toward the desert floor. Remote landmarks like the Split Rock Area and Malapai Hill serve as distinct navigational points along the early tracks and the Dillon Highway.
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This is the sole edition of this map. No revisions or reprints were ever made.
1904 · Indio
USGS Topo · 1:125,000
1940 · Cottonwood Spring
USGS Topo · 1:62,500
1941 · Toro Peak
USGS Topo · 1:62,500
1941 · Coachella
USGS Topo · 1:62,500
1941 · Edom
USGS Topo · 1:62,500
1942 · Amboy
USGS Topo · 1:250,000
1943 · Amboy
USGS Topo · 1:250,000
1943 · Coachella
USGS Topo · 1:62,500
1943 · Pinkham Well
USGS Topo · 1:62,500
1944 · Toro peak
USGS Topo · 1:62,500