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Important early historical map of the California gold region

Place/Date: Washington, D.C. / 1849
Title: Sketch of General Riley’s Route Through the Mining Districts July and Aug. 1849
51 x 60 cm (20 x 23.5 in)
Condition Rating


This important and early map of the California Gold Rush was made from Lt. Derby’s original sketch by J. Mc. H. Hollingsworth in the office of the 10th Military Dept. covers central California including San Francisco, Monterey, east to the Sierra foothills and the diggings, with the various mining camps named and shown.

It is historically important, not only for its depiction of Gen. Riley’s route, but because it names, for the first time, certain actual mining camps in the middle Sierra foothills; Mormon Island (misspelled Mormont), Coloma (mislabeled Colluma), Curtis, Sullivan’s, Corons, Jamestown, Woods and Sonora. The entire route of the Riley party is noted, with the dates of their visits to the various camps, and covers the region from Monterrey Bay, north to Sacramento and east to the gold diggings.


George Derby & J. McH. Hollingsworth

George Horatio Derby, born at Dedham, Massachusetts, April 2, 1823, graduated from West Point in 1846, and after a tour of duty in the East and Middle West, came to California in 1849. He accompanied Brig Genl. Bennet Riley on a tour of the gold districts during the summer of that year, and his Sketch of General Riley’s Route was the result of that journey.

Condition Description

Left side worn, including chipped corner. Fold discoloration. Map image generally clean and bright.


Wheat, Maps of the Gold Region, 79.

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