This is the official administrative map of Yosemite National Park as issued in April 1910, during the U.S. Army’s stewardship of the park and in the years prior to the establishment of the National Park Service. The map depicts boundaries established by acts of Congress and includes outposts, proposed telephone and telegraph lines, trails, roads, and surveyed township grids—reflecting both administrative oversight and infrastructural planning at a formative moment in the park’s development.
All major features of the park are identified, including Yosemite Valley, Tuolumne Meadows, Glacier Point, and Hetch Hetchy Valley—then still undammed.
The location of Camp A. E. Wood, the Army’s summer headquarters, is noted just inside the southern boundary near Wawona.
The detailed base map integrates USGS topographic methods with public lands survey geometry, offering a technically sophisticated overview of both natural and administrative geography.
Provenance
This copy bears the ownership stamp of Colonel George Ruhlen (1884–1971), U.S. Army, who would later serve as commanding officer of Fort Rosecrans in San Diego during World War II and became an active historical geographer and preservationist in postwar California.