This is an early edition of one of the most sought after Pacific Railroad reports because of its exceptional illustrations of topographic views by Charles Koppel and W. P. Blake (including Koppel's famous first published view of Los Angeles), Blake's large color geological map of southern California, and wealth of information concerning early California life, gold rush areas, and geographical observations recorded along the route. This report describes Williamson's route from Benicia to San Diego examining mountain passes through the Sierras as the party headed southward. Volume V is one of the most richly illustrated volumes in the series containing numerous text illustrations, 20 out of 24 color/tinted lithographs (missing San Diego), 37 of 37 black & white plates, and colored geological maps and profiles. Blake's large folding map Geological Map of a Part of the State of California Explored in 1853 by Lieut. R. S. Williamson (18 x 24.5") shows the entire state with geological coloring extending from the gold mines near Sacramento on the north, to the Mexican line on the south, and from the Sierras on the east to the Pacific Ocean. Many of the important gold mining areas are shown. Lake Tahoe is shown as Lake Bonpland. Additional single-page colored geological maps for the vicinity of San Francisco, Canada de Las Uvas, and Country between San Diego and Colorado River are also present (missing Tejon Pass). These are among the first colored geological maps produced for the state. Full contemporary leather with gilt title labels on spine.

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Condition: B+

The loose folding map of California is very good with light scattered foxing. The tinted lithographs range from good (due primarily to toning) to near fine, and the Los Angeles plate is loose. Text is very good with occasional foxing. The front hinge is starting. Covers are heavily worn with numerous chips to the spine.