A Correct Map from Actual Surveys and Examinations Embracing a Portion of California between Monterey and the Prairie Butes in the Valley of the Sacramento Shewing the Placeres, 1849

Published in Wilkes' 'Western America, Including California and Oregon, with Maps of Those Regions, and of 'The Sacramento Valley', Philadelphia: Lea and Blanchard, 1849, and one of three large folding maps included in the volume. “Commander Wilkes compiled this work from data gathered while he was on the Pacific Coast commanding the United States Exploring Expedition from 1838 to 1842. He included a chapter on the gold region drawn from official reports and his knowledge of the area's geology and his own opinion of gold specimens sent east. The preface was dated February 1, 1849. The map of the Sacramento Valley was an important source of information for gold seekers” (Kurutz, The California Gold Rush 679a).

This map was one of the first large scale maps of the Gold Region and an important source of information for gold seekers.