Many migrants from the East Coast of the United States made the long journey to California over land. This 1849 map, which accompanied Fayette Robinson's guide book, California and its Gold Regions, shows various land routes to the gold region of California.
J.M. Atwood, "Map of the United States, the British Provinces, Mexico &c. Showing the Routes of the U.S. Mail Steam Packets to California, and a Plan of the Gold Region," (New York: J.H. Coulton, 1849). Available from the California Historical Society, [http://www.library.ca.gov/goldrush/sec03.html].