Interesting large format topographical map centered on the Yosemite Valley, published by the United States Geological Survey. The map extends south to the Mariposa Grove and Big Trees and north to the Hetch Hetchy Valley (pre-dam) and Lake Eleanor. Centered on the Merced River from Tenaya Canyon and Half Dome in the east to Bear Creek and Saxon Gulch in the west. Many place names, roads, stage stations, etc. A bit of spotting along the right side of the map, witin the image, but generally a good example.