Highly detailed map of California and Nevada, with insets of the Yosemite Valley, Sacramento, and San Francisco Bay vicinity.
This is one of the earliest atlas maps to include an inset map of Yosemite and a plan of Sacramento.
Many interesting early details, including the Coulterville Trail, Mariposa Trail, and several other trails through the Valley and on the upper walls, and numerous rivers, falls, elevations, and small encampments. The inset of Sacramento shows streets, parks, wharves, rail lines, and other early features.
The state survey of California is nearly complete. Orange, Imperial, and Riverside Counties are still not present.
O. W. Gray was a publishing firm based in Philadelphia. Later, they published as O. W. Gray & Son. They published atlases in the late nineteenth century. Gray's National Atlas was one of the most successful commercial ventures of the 1870s and one of the last to employ hand coloring on maps.